This is the same for other fish too, like neon tetras. It is however best kept in pH 6-7.8 and the water should be soft to medium hard (max 15°dH). Newly hatched brine shrimp are one of the few foods small enough to give them. But if you want them to feed in the big fish tanks, you can also go for that. It is an active fish that is entertaining to watch and will provide countless hours of fun. Temperature should be kept at 76F. On their own they are quite shy, but when they form part of a group, they come alive and you’ll notice they are much happier and content.eval(ez_write_tag([[300,250],'fishkeepingworld_com-banner-1','ezslot_1',154,'0','0'])); The larger the group, the more impressive their movements and colors will be. Least Rasbora (Boraras urophthalmoides) Brine shrimp, daphnia, and any type of worm are excellent supplemental foods, particularly when conditioning before breeding. Thanks, Robert, I have had the hardest time finding breeding information on harlequins. Jul 29, 2019 #1 Here's a link to the video. In 1935, an image of a trio of harlequin rasboras, stamped in 14k gold, would grace the cover of the first edition of … Harlequins prefer an environment with areas of dense vegetation, an open area for swimming, a dark substrate, and subdued lighting. Fishkeeping world was created by a school of fish fanatics. They need to be kept healthy and the conditions in the tank need to match what they’d be used to in the wild. Daphnia, bloodworms, and insect larvae are some small examples. In the wild, they survive at acidities down to a pH range as low as 3! If not, there are treatments you can buy to help get rid of the disease. This makes them perfect for beginners starting a community aquarium. Separate the parents from the fry as they will try to eat them. The easiest way to cater for their needs in an aquarium is through store-bought foods. The fry is translucent and remains attached to the leaf upon which the eggs were laid for another 12 to 24 hours, during which time the yolk sac is absorbed. You can keep snails and shrimp with harlequin; they’re unlikely to notice each other. This shoaling species loves to be in large groups. They’re peaceful so get on well with other peaceful fish, but they can become a snack for larger species. The female harlequin rasbora is also larger than the male. UNK the , . The waterlogged soils of these forests inhibit the complete decay of leaf litter, resulting in the formation of peat, which leaches humic acids. Only keep an amount that can comfortably fit in your tank though, around two per gallon in at least a 10 gallon tank.eval(ez_write_tag([[300,250],'fishkeepingworld_com-leader-3','ezslot_9',118,'0','0'])); As omnivores, these fish will eat a wide range of foods. Clown Loaches and Bettas are a couple of species that may harass others. I love bettas and was thinking of getting a small shoal of 4-5 of these. The distinguishing triangular patch begins near the dorsal fin and comes to a point near the base of the caudal fin. Cherry Barbs, Corydoras Catfish, Danios, Dwarf Gourami, Guppies, Hatchetfish, Mollies, Platies, Tetras and Zebra loaches are just a few good options. When spawned in groups, keep two males for every female. If a fish isn’t getting all the nutrients they need from their diet, they will be too weak to fight off disease. The black wedge on females is perfectly straight. Scientific Name: Trigonostigma heteromorpha, Adult Size: 1.75 inches (4.5 centimeters). These have been specially designed to contain a range of nutrients. Moreover, many people love to adopt and feed this fish as caring is simple. Thanks, Robert. They prefer the lowland waters of southeastern Asia, where the water is soft and acidic. Here, you can find out everything you need to know about keeping fish and aquarium maintenance. Hi Hope, they need a minimum tank size of 10 gallons. The harlequin rasbora is the most popular rasbora species available in the hobby, and it is also by far the most common. The Harlequin Rasbora is easily identified by its characteristic black \"pork chop\" shaped patch and beautifully lustrous copper/orange body. Final thoughts. Due to their non-fussy nature, they are very easy to feed and once settled into their aquarium shouldn’t offer too many [Continue reading …], There are many peaceful tropical fish available for a community aquarium. Another factor that raises the likelihood of disease is poor nutrition. A slightly warmer temperature (around 80°F) will help to encourage spawning. Remove any excess food from the tank after eating time to prevent decay.eval(ez_write_tag([[336,280],'fishkeepingworld_com-narrow-sky-2','ezslot_15',120,'0','0'])); Harlequins are hardy fish, so they don’t get ill very often. Select young specimens and condition them with live foods such as daphnia and mosquito larvae before the spawning attempt. Robert Woods is the creator of FishKeeping World, a third generation fish keeper and a graduate in animal welfare and behavior. Also known as the Celestial Pearl Danio, the Galaxy Rasboras truly lives … After cleaning the tank, you might see an improvement in your fish. Of the more than five dozen species of rasbora, the harlequin is arguably the most popular of them all. The rest of the body is silver, with tinges of orange. An aquarium intended to house harlequin rasboras should be planted with live plants, with some open areas for swimming provided between stands of plants such as Cryptocoryne species, these being among the plants that inhabit the harlequin rasbora's native waters. This black patch is what gives this fish it’s name, being similar to the black patterns found on a classic harlequin outfit. The larger the group, the better their displays will be. The most common diseases affecting them are issues for many other aquarium fish too. Do I need more males to females? A slightly more tricky option, the Harlequin Rasbora is a tall, reddish colored fish with a black triangle marking on the sides of their bodies. Breeding of Harlequin Rasbora is difficult, but not impossible. However, they will accept frozen foods and freeze-dried foods as well as flake foods. The species became an instant favorite among aquarists after its introduction in the early 1900s and is the best known and most widely kept species among the rasboras. During one to two hours, as many as 300 eggs may be laid, although, 80 to 100 is more typical. I have 2 males and 6 females and the males just chase all the females and will sometimes try to wrap their tail around the females under the broad leaf plant but no eggs have been laid. The only challenge in keeping a harlequin may be … We recommend adding a few drops of medicine to water too. I have 5 harlequin rasboras that I've had about 6 weeks or so and I was wondering if this is normal. They’re easy to care for, and as long as they’re fed a simple diet, and their tank is kept clean, they’ll thrive. The Harlequin rasbora is one of the hardiest rasbora species kept in aquariums and it will adapt to a variety of different conditions. Sign in to Save $5 on select Hill's Science Diet Pet Food with code SAVEONHILLSWM. Often referred to as harlequins, they are one of the most popular rasbora species for home aquariums. Six to 12 eggs are laid at a time. Males tend to have slightly larger black patches and a more rounded section where the anal fin attaches. You don’t need any specialist equipment; the filter outlet creates a strong enough current and most commonly sold aquarium lights are suitable. The harlequins will move around together, sometimes displaying some interesting behaviors. Lambchops are another type of rasbora that comes from blackwater peat swamps. Our aim is to help educate anyone who wants to keep fish. Shoaling fish are very popular for home aquariums because of their fun group behaviors and striking colors. This does mean you can feed them green vegetables though, or even use these to make your own homemade fish foods. It inhabits streams and waters that are characterized principally by their low mineral content and high concentrations of dissolved humic acids, which is typical of water that flows through swamped forests. The Harlequin Rasbora (Rasbora heteromorpha) is an extremely desirable aquarium fish and no doubt the best known of all the rasboras.. Harlequin Rasboras belong to the Cyprinidae family of carps and was originally given the scientific name Rasbora heteromorpha but is now known to tropical fish keeping enthusiasts as Trigonostigma heteromorpha, or the harlequin fish. Fish hobbyists love the harlequin rasbora—it has a beautiful metallic color and it is easy to care for. The Harlequin Rasbora (Rasbora heteromorpha) is an extremely desirable aquarium fish and no doubt the best known of all the rasboras.. Harlequin Rasboras belong to the Cyprinidae family of carps and was originally given the scientific name Rasbora heteromorpha but is now known to tropical fish keeping enthusiasts as Trigonostigma heteromorpha, or the harlequin fish. Male harlequins are more slender than females and exhibit a rounded extension at the bottom edge of the distinctive black wedge covering the posterior of the fish. Harlequin Rasbora are hardy freshwater fish that make for excellent starter fish. Description. The harlequin rasbora is a native of Malaysia, Singapore, Sumatra, and southern Thailand. You won’t have to replicate that environment, but try to keep a healthy level of tannins in your aquarium. The harlequin rasbora is a shoaling fish; it should be kept in schools of eight to 10 individuals. Harlequins are among the more difficult tropical freshwater species to breed, however, spawning may be achieved if you provide the proper conditions. This species looks similar to Rasbora espei and R. hengeli. They do best when placed in a tank as a small school, over six fish. What gives? A large group could compete with some of the most attractive fish in the aquarium industry.eval(ez_write_tag([[468,60],'fishkeepingworld_com-large-mobile-banner-1','ezslot_2',124,'0','0'])); Do you have a group of these shoaling fish? Decorate your harlequin rasbora tank with live aquarium plants, large rocks and pieces of driftwood to mimic the natural habitat of these fishes. Rasbora kalochroma is a big boy and needs a larger home. These fish don’t get very large, but they do need some open room in the center of the tank to swim. Rasbora Harlequin predominantly dwell at the middle level of the tank, they rarely venture up to the surface of the tank or the bottom of the tank. They are both sold as false harlequin rasboras in stores. These will be attached to the leaf and hatch after 24 hours or so. A dirty tank is one of the leading causes of disease outbreaks.eval(ez_write_tag([[300,250],'fishkeepingworld_com-portrait-2','ezslot_24',121,'0','0'])); Therefore, cleaning your tank is a simple preventative measure to make sure you don’t lose your fish. Generally, this fish is for a small tank, and it can adapt itself perfectly in small tanks. Some of the species have light sensitive eggs that will die if exposed to much light. The patch on the male Harlequin Rasbora is slightly rounded at the bottom with an extended tip. At 10cm/ 4” in total length and, with a habit of displaying between males, this rasbora does much better in a tank of at least 120cm/4’ in length. This is a great fish for a smaller-sized community tank as it is peaceable with most other species. To encourage spawning, you need to put them in a separate dimly-lit tank of soft water whose temperature should be 80° F (26° C), pH level at 5.3-6, and general hardness within 1.5-2.5 dGH. Spawning will usually begin in the morning and is initiated by the male dancing and trembling before the female. Thanks. Save my name, email, and website in this browser for the next time I comment. Add these fish to your tank and you will be rewarded with unique shoaling behaviors and strong colors. Plants may help control nitrate levels somewhat but they don’t help with other chemicals that the fish secrete such as hormones and pheromones. Your email address will not be published. Hi Beth, 4 will be fine in a 10 gallon tank with your Cory. It is a smaller fish, so keep it with like-sized specimens; larger fish might be attracted by its shimmer and try to make a meal out of it. You can keep harlequins with any fish as long it’s not large and predatory. Water temperature is not critical, however, the ideal range is 74 to 78 F (23 to 26 C). It’s always best to vary their diet, if not for nutritional purposes, then just to keep it interesting for them.eval(ez_write_tag([[336,280],'fishkeepingworld_com-mobile-leaderboard-2','ezslot_12',119,'0','0'])); This can be done with live or frozen foods. Every aquarium needs some form of filtration. On the face of it, the Harlequin rasbora can … When ready to spawn, the female will turn upside down and rub her belly against the underside of a leaf, signaling the male to join her. These conditions resemble those found in the blackwater habitats of South America. Schools of even larger numbers make for a beautiful display. For the first 5 weeks I had them they stayed in the top third of the tank and now I noticed one started swimming down to the bottom half of the tank and they other 4 seemed to follow him and today most of the day they have been hanging exactly in the middle of the tank … of and in " a to was is ) ( for as on by he with 's that at from his it an were are which this also be has or : had first one their its new after but who not they have – ; her she ' two been other when there all % during into school time may years more most only over city some world would where later up such used many can state about national out known university united … Thanks, Robert. Though conditions will differ between these habitats, there are a few things that are constant. This is easier on their digestive system, than giving it to them all in one go. Here they inhabit rivers, streams and swamp forests which resemble the blackwater habitats of South America.eval(ez_write_tag([[300,250],'fishkeepingworld_com-medrectangle-4','ezslot_4',109,'0','0'])); These small shoaling fish are easy to care for, so you shouldn’t have many problems. The fins are a darker orange but can vary in color intensity. Once this process is completed, the fry become free-swimming, and at this stage, require very finely sized foods such as live infusoria for a period of seven to 14 days, after which the fry can feed upon newly hatched brine shrimp. We’re thrilled to have you as part of our community. Often referred to as a red rasbora, the body is a reddish-copper color that is accented by a striking black wedge covering the rear half of the body. Over the last week I've noticed that he appears to have trouble swimming.. balance seems ok, but it looks like swimming is an effort & he's 'pushing' himself forward, rather than swimming gracefully. Harlequin rasboras are peaceful fish and will stay out of everyone else’s way. These include dropsy (fluid buildup causing swelling), Ich (White spots over the body), and fin rot. The main thing to watch out for is the size of the food. This spawning behavior is intended to direct the female beneath a suitable plant for depositing the eggs. Thanks. The water should be at 10dh hardness and a ph of 6.5. Care Level: Very Easy Water Conditions: 6.0-7.8 and Very Soft to Moderately Hard Temperature: 22–27 °C (71.5–80.5 °F) Maximum Size: 1.5 inches (4cm) The Harlequin Rasbora (originally named Rasbora heteromorpha, but recently changed to Trigonostigma heteromorpha) is a small fish native to Southeast Asia. The information, content and material contained on the site is intended to be of a general nature only and is not intended to constitute professional/medical advice. A small group adds some color and shoaling behaviors to the middle levels of the tank. This species is native to Asia and is commonly seen around Malaysia, Singapore and Thailand. They’re a shoaling species so do well in the company of their own kind. Aquarium invertebrates are growing in popularity all the time. I have 1 male Betta Splenda in a 30 litre aquarium with 6 Harlequin Rasbora and 3 Japonica shrimp. 85% is the maximum recommended stocking level, with over 100% filteration. Harlequin rasboras have small mouths, so they’ll only be able to eat small particles. In the wild this means they’re restricted to foods like plant detritus, small insect larvae and eggs. Any rocks or decorations you add will be purely aesthetical for these fish; they’ll spend most of their time in open water. The fry will be nearly completely clear and feed on a yolk sac for the next 24 hours. A small arrangement of plants is all you need to keep these fish happy. However, it can be confused with two other similar looking species, the glowlight rasbora and the lambchop/espe’s rasbora. Is a plant set up necessary for harlequins or can I keep them with artificial plants in my aquarium? Start with a soft sandy substrate at the bottom of the tank. More Pet Fish Species and Further Research, Dwarf Gourami (Flame Gourami) Fish Species Profile. Offer valid 12/28/2020-3/1/2021 with Treats membership online only at petsmart.com. Clown rasbora. Conditions need to be perfect or else they won’t start to spawn. They can be looked after by people of experience levels. The species became a favourite among hobbyists after its introduction in the early 1900s. You can breed groups of young harlequins in a single aquarium. But one of them looks damaged. Is the Harlequin Rasbora Suitable for Your Aquarium? Hi I was wondering and it is probably a stupid question but I’ll ask it anyways would I be able to put these fish in a five gallon? Welcome to Fishkeeping World. Thanks to their stunning appearance and hardiness, they’re a great fish for aquarists of any skill level. pH should be 6-7.8 and keep hardness to 2-15 KH. A large school makes an aquarium vivid and vibrant with movement. Any smaller and there would not be enough space to shoal so you’d have to keep them in pairs or on their own.eval(ez_write_tag([[250,250],'fishkeepingworld_com-narrow-sky-1','ezslot_14',116,'0','0'])); Aim for around two per gallon. Harlequin Rasboras are a great example of an easy shoaling fish to add to your tank. Before you begin your fish keeping journey, you’ll need to know what fish to choose for your aquarium and how many fish can live in a 20-gallon tank. All the other fish in the tank are fine. Most of their time will be spent in the middle layers of the water, rarely journeying to the surface or substrate. Galaxy Rasbora. When you have a group, you’ll see some shoaling behaviors. Your fish will need nutritional foods full of protein too; daphnia and bloodworms are good options. All where placed in a new set up yesterday morning, i noticed 2 of the shrimp die last night so and the third was struggling, i placed him in my other community tank and he perked right up and is now fine, this morning I woke to find one of the Rasbora dead, … The male will approach her while continuing to tremble, then wrap himself around her body and fertilize the eggs as they are released. Their body has a tall mid-section but narrows towards the mouth and forked caudal fin. Live foods in particular make feeding times interesting by introducing movement. supports HTML5 video. In contrast, the patch on the female Harlequin Rasb… They are a striking fish which, when added as part of a group, will add a vibrant splash of color to your tank.eval(ez_write_tag([[468,60],'fishkeepingworld_com-medrectangle-3','ezslot_6',152,'0','0'])); This captivating small fish has very few specific care needs and they aren’t very demanding. Harlequin rasbora differs from other popular rasboras in the aquarium when it comes to breeding. The harlequin rasbora is a popular variety of fish that can be found worldwide. The Black Harlequin Rasbora will occupy the upper region of your freshwater aquarium, adding lively movement and exciting color for a marvelous display. (Summary), Best Aquarium Filter: Complete Guide of 2021, Red Tail Shark: Tankmates, Care Guide and More…, Rosy Barb: Tank Setup, Care Guide, Breeding And More…, The Complete Guide to Vampire Shrimp Care, The Complete Malaysian Trumpet Snail Care Guide, The Ultimate Hermit Crab Care Guide: Habitat, Food And Much More…, Silver Body with a Black Patch and Orange Fins, Freshwater with Plants and Open Swimming Space. Small peaceful fish are ideal. Shirlie is a fish and aquarium lover with 16 years of experience writing on the topic of raising and keeping fish at home. 8. The male will come to fertilize the eggs. Planted in the substrate would be plants surrounded by rocks and debris. New to this, Hi Jas, given that both of those species like to be kept in small groups, a 10 gallon tank is too small. I’m planning on using real plants and will have an algae eater (tbd as I’m still researching). I have a sick Harlequin Rasbora. The pH of the water should be slightly acidic, in the range of 6.0 to 6.5. Often referred to as harlequins, they are one of the most popular rasbora species for home aquariums. M. Mr-Furious99 New Member. Keep two females for every male. Place some plants around the tank for them to hide in, though leave plenty of open swimming areas for them to shoal and swim around in. The more you’re able to fit in the tank, the more impressive these displays will be. I have a Harlequin who has been swimming on his side for over a week now. They tolerate a wide range of conditions, are peaceful community fish, and eat various foods. In nature, their diet consists primarily of insects. This means you’re free to pick other similar fish to keep as tank mates. The harlequin rasbora (Trigonostigma heteromorpha) is a small fish in the family Cyprinidae. Harlequin rasboras need at least a 10 gallon aquarium. Hobbyists who are intent upon simulating natural conditions as closely as possible may choose to filter the aquarium water over peat, thus replicating the humic acid concentrations found in the fish's native waters, although this is not necessary if the basic water chemistry parameters (no higher than 4 dGH of hardness, pH around 6.4) are correctly maintained. If you’re looking to breed them then they will need much more attention. I have a small shoal of harlequin rasboras, they are colorful and charming. Harlequin rasboras can be found for sale at most good fish stores for a few dollars each, although you’re likely to get a discounted price if you buy a group of these popular fish. You may see the male nudging the sides of the female and rubbing his belly against her back to move her to the spawning location. The Harlequin Rasbora is part of the Cyprinidae family. You’ll need some broad-leaved plants (such as Anubias Nana) in your tank because once ready to spawn, the female rubs her belly on the underside of a leaf to signal the male. If harlequin rasboras appeal to you, and you are interested in some compatible fish for your aquarium, read up on: Check out additional fish breed profiles for more information on other freshwater fish. You can keep 3 or 4 Guppies, or 2 – 3 Rasboras in a 10 gallon, depending on which species you’d like. To view this video please enable JavaScript, and consider upgrading to a The harlequin rasbora (Trigonostigma heteromorpha) is a tropical fish from the Cyprinidae family. It will not nip at or quarrel with any other species. So, if you are ready to put in a lot of effort, you may be successful at breeding them. Harlequins readily accept all foods but prefer to eat live foods whenever possible. This depends on lots of factors such as the conditions of the tank, stress levels of the fish and the population they were bred from.eval(ez_write_tag([[580,400],'fishkeepingworld_com-large-leaderboard-2','ezslot_8',135,'0','0'])); While these designs aren’t striking on their own, a group can create quite a spectacle. The Harlequin rasbora is a small, peaceful and playful fish. Thanks. Get it free when you sign up for the Spruce Pets! The harlequin rasbora (Trigonostigma heteromorpha) is a tropical fish from the Cyprinidae family. Spotting the difference between males and females can be difficult. Harlequins bred for aquariums are grown in environments based on their river habitats, so this is the habitat you need to recreate in your tank. Some of the more difficult to breed rasboras, such as the harlequin rasbora, will need reverse osmosis water to obtain the required softness needed to breed them. Along with all the other considerations, you want species that prefer different water levels rather than ones that will all congregate at, for example, the top of the tank. A varied diet will ensure that digestive problems or susceptibility to disease do not occur. If you keep them healthy, they can live for 5-8 years.eval(ez_write_tag([[336,280],'fishkeepingworld_com-leader-4','ezslot_10',137,'0','0'])); Unfortunately they are one of the harder species to breed in an aquarium, but it is possible. Our free guide can help keep your tank clean and your fish healthy. The water level should be kept low, let’s say about 20cm and the temperature of the water should be set at 28 0 C while the pH range is maintained around 6.0. This species is quite timid so may become stressed if they’re chased by overactive fish. After this, you will have to start feeding them. What might have caused this? Add beautiful yet pretty Harlequin rasbora inside the aquarium. This gives them a group to swim around the tank in and feed together. Let us know your experiences in the comments section below…, The Complete Oscar Fish Care Guide: Types, Diet, Tank Mates…, Yoyo Loach Care Guide: Size, Breeding And Much More…, An aquarium needs to be kept clean. This species is native to Asia and is commonly seen around Malaysia, Singapore and Thailand. The life expectancy of a Harlequin Rasbora is around 6 years but they can live up to 8 years in the right conditions. Level of care: easy. Just avoid too fine sand substrate for any nano species. Feed them twice a day, only giving them what they can finish in a couple of minutes. You can keep harlequins together; in fact you should keep them in groups of at least four. The perfect match for a beginner. In water temperatures of about 80 degrees Fahrenheit, the eggs will hatch in approximately 24 hours. You should avoid most species that are larger than double the harlequin’s size as they will probably view them as a snack. Southeast Asia, Malaysia, Singapore, Sumatra, Thailand. Copyright © 2020 - Fishkeeping World - All Rights Reserved. A mature Harlequin Rasbora grows up to two inches (5 cm) long. An aquarium of that size enables you to keep a range of freshwater fish, living plants, and invertebrates, too. I’m looking at getting a 10 gallon tank soon. You won’t struggle to find harlequins; they’re usually in high demand so most aquarium stores will stock them. Optimum water temperatures for spawning are between 76 and 80 degrees Fahrenheit. While other rasboras are egg-scattering spawners, harlequin rasboras are egg layers. I have had mine for almost two weeks and two days after I got them they began trying to spawn. For breeding, harlequin rasboras require very soft water; hence the degree of hardness should be within 1dH and 3dH. Some potentially good tankmates may include cardinal tetras, bettas, neon tetras, small barbs, dwarf gouramis, danios, other small rasboras, and cory catfish. Rosy Barbs are a great choice, they are active, colorful and peaceful. Hi I was wondering how many Harlequin Rasboras can you put in a 10 gallon tank? Hi Piyush, artificial plants are fine too. Hello, how many Rasboras could I put with a Honey Gourami in a 10g tank? If infusoria are unavailable, commercially prepared foods for an egglayer may also be used. The rear half of the body has a black patch that narrows with the body and stops at the caudal fin. Their omnivorous diet means they are opportunistic; they eat whatever comes their way. Even though they can eat plants, it’s unlikely so you don’t need to worry about damage. Sometimes overlooked among the considerations is at what water level the fish prefer to swim and school. You should expect to pay $2-4 per fish.eval(ez_write_tag([[300,250],'fishkeepingworld_com-box-4','ezslot_21',111,'0','0'])); They are peaceful creatures; they won’t harass any of their tank mates. Would that be overloading the tank? Neon Blue Dwarf Gourami (Colisa lalia) Harlequin Rasbora swimming strange. Joined Nov 1, 2018 Messages 16 Reaction score 0. A 20-gallon tank is ideal for a beginner to the hobby and offers lots of exciting options. When spawning is complete, remove the breeding stock from the aquarium, as they will consume the fry once they hatch. Having the best aquarium filter is the most common method of keeping your water clean. This should give your fish everything they need to stay strong. If the water becomes polluted, your fish will get sick. Plants also reduce swimming room, which as David has already pointed out is already reduced in a tall tank. With proper care you’re unlikely to experience any problems. Young harlequin rasboras then reach sexual maturity in approximately six to nine months. Fish Keeping World is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and any other affiliated sites. As peaceful, social fish, the Black Harlequin Rasbora does best in a school of around six or more and enjoys lots of open areas for swimming. Clowns prefer more flow, … The average lifespan of the Harlequin Rasbora is between 5 and 8 years. The harlequin rasbora at a glance: Fish size 4 to 5 cm Tank size From 54 l Temperature 22°C – 26°C pH level 5.0 – 7.0 Compatible with Labyrinth fish, loaches, other danios Tank region Middle Food Eats all smaller food types, particularly likes black bloodworms The harlequin rasbora belongs to the carp family (cyprinidae), […] Concentrate tall plants and large decorations near the back and sides of the tank so there is plenty of open swimming …
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