Maintaining stable water chemistry is beneficial for the wellbeing of these fish. Still, on peace, I should point out that Pepper Corydoras are among the few fish types that never get aggressive with each other during mating. The Chili Rasbora is sometimes called Mosquito Rasbora and is a peaceful fish you could catch from the Indonesian rivers. Coming from such a habitat, the Ember Tetras are cool dwarf fish that have learned to be fast swimmers and shoal around the middle level of the tank. I love it mostly for its cool-looking colors which, you could think, are too stunning to be real. A 10-gallon tank can comfortably accommodate a modest school of this fish. Maybe just my Rosy Loaches are nice to snails. It was not an easy task to collect this information from all over the place. Generally, livebearers will do well if you keep more females than males. I was planning on adding some shrimp after 2 weeks and after another 2 weeks the fish. The Pygmy Hatchetfish are among the best community freshwater aquarium fish that stay small throughout their lifespan. I am yet to find out if this is a universal phenomenon. They remain small in size even in adulthood and can adjust to a great temperature range. Though Harlequin Rasboras are not the best for a small aquarium of 3.5 or 5 gallons they will perfectly suit a 10-gallon community fish tank. Thanks in advance for your time!. You can sign in to vote the answer. Feed them on micro-worms, Tubifex, or Daphnia. Although the different sexes of Galaxy Rasboras have different colorations, they nevertheless share orange, white or golden spots (sometimes strips) spread all over their dark blue or black body color. Being omnivorous, Harlequin Rasboras dine on whatever comes their way, but they seem to enjoy plant detritus and insect eggs. Pristella Tetras are another tiny fish I wholeheartedly recommend for a beginner aquarist. What are the benefits of aquarium pest pond and bladder snails. Visit the link to skim my article on good options for that. Having grow lights that are designed to support the growth of aquarium plants helps in this situation. In their natural homes, they feed on insects and plants so try to provide a similar diet for them in the aquarium. I have an all male endler group in a heavily planted 5 gallon tank. My predicament is that I don’t want my otos or RCS to be scared of any fish that I put in, currently even the shrimp babies don’t hide from the guppies and… Read more », Hi and thanks for the question! However, the fish is active — don’t be fooled. Rush to the front of the tank when they see you to beg for food so nice to interact with. Right before we start, I will share a photo of one of my all-time favorite fish for small aquariums, the Celestial Pearl Danio (or also known as Galaxy Rasbora): I took considerable time off to do some deep research on nano fish that would best suit a freshwater aquarium. Mind that some of these will not be an easy find, but if you manage to get your hands on them – it’s absolutely worth it. I once heard some suspicious buyers whisper that the two are actually the same species from different environmental conditions. Your aquarium size shouldn’t be less than 5 gallons. From the list, I can recommend the dwarf… Read more ». I would not really recommend this species to beginners. Another unique aspect I have observed with them is this constant power struggle. There are too many fish to be included in this list, so it’s nice when people comment with more options because I will not always be able to add them all. The Dwarf Rasbora has become trendy because of its entertaining schooling behavior and its peaceful disposition, which makes it a bearable companion among other tank-mates. I recommend a 10-gallon tank and a temperature of 26°C. The decomposing wastes raise ammonia or nitrites concentrations, which are both extremely toxic to live fish. Least killifish won’t bother adult shrimp, but I’ve seen them go after shrimplets. On top of good oxygenation, the Neon Stiphodon Goby also prefers a strong water flow. I am just cycling a 5 gallon Spec V and am getting a betta and would like a couple of small tank mates for him. It is one of the seven species that make up the Elassoma family. Yet, you still have to leave enough clear space for shoaling, especially in mid-water as rosy loaches are middle to bottom aquarium dwellers. It took me about 5 days of work to Aquanswer your concerns about relevant species for a thriving nano fish tank. Answer Save. Margo. The floaters will cast shadows and the Indian almond leaves will release tannins in the water, coloring it a darker tint, while supporting the rasboras’ immune system. Galaxy rasboras (celestial pearl danios) will make a mess out of the shrimp for sure. Such fully-grown size makes the Dwarf Rasbora one of the smallest fish in the aquarium trade. These are schooling fish, so I advise that you keep them in a group of about 6 specimens for a 10-gallon fish tank. It is considered the cousin of the Paedomorphic Cyprinid fish family because they share similar features like an unprotected brain (their narrow frontals are the reason for this). Therefore, the tank you prepare for them should contain boundaries between them, especially males. The world’s smallest fish is Paedocypris progenetica, and was only recently discovered in the last decade.Scientists discovered it living in the forest swamps on the Indonesian island of Sumatra. Pygmy Corydoras are a good choice. Again, they are not what I would call shoaling fish. Only rocks and small leaf plants. Paedocypris Progenetica. You would have to change the water more often, and this too comes with its complications. Where can you buy Paedocypris progenetica (the smallest fish in the world)? Her fry is bigger than the other livebearer fish’ fry. You may keep 1 male and 2 female Neon Stiphodon Gobies in a 20-gallon tank. Indeed, the jaws dominate the males’ heads. Suggested aquarium gear for a school of 6 Pygmy Hatchetfish: The Neon Stiphodon Goby is a small freshwater fish that reaches no more than 1.5 inches or 3.8 centimeters upon maturity. The other 6 species of sunfish range between 1.2 to 1.3 inches. Therefore the Indonesian Superdwarf fish are a perfect addition to a 3 to 5-gallon black water planted tank. The Indonesian Superdwarf fish can thus comfortably shoal in a 3-gallon tank. I did some heavy research in order to come up with the freshwater micro fish that are among the smallest ones in the aquarium hobby, even in their adult stage of life. Of course, this calls for a 10-gallon tank at the very least. I keep my Rosy Loaches at 77°F ( 25°C) temperature of the aquarium water. What impressed me most when I just had these small fish was how fast they adapted to the new environment without any hitches. Stop coral beauty angelfish bully my 2 clown fish? This is critical as they are mainly wild-caught. The change is triggered by various factors like the conditions of the tank and the level of stress they experience. Pronunciation of paedocypris with 1 audio pronunciation and more for paedocypris. That being said, Paedocypris Progenetica still holds a world-record title: it is currently the smallest freshwater fish in the world that can live in home aquariums. From this list my favorite is the galaxy Rasbora followed by gulf coast pygmy sunfish, white cloud minnow, least killifish and then ember tetra in that order. For instance, are there cold-water alternatives to the tropical species that suit a compact aquarium? The smallest aquarium size I recommend for housing them is a 10-gallons of water for living space. However, this competition to be in charge rarely ends up in a fight. Really cool nano fish though. Maintain them with a fleshy diet supplemented with vegetables if you want to enjoy watching their vibrant orange coloration. You do not want to imagine what these dwarf fish would look like if it were the size of, say, an adult dinosaur. I have noted that they rarely prey on snails though. This fish definitely needs equally timid aquarium companions, such as Loricariid catfish and Corydoras. Based on my personal experience and some research I did, I compiled a list of the smallest freshwater nano fish that can live in a tiny tank. TheRav1n. I would never hesitate to look after sparkling gouramis. Aquanswers.com is a participant in the Amazon Services LLC Associates and other affiliate advertising programs, designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com or other websites of the like. If you do not shut the top of your aquarium, this seemingly timid tiny fish would sometimes jump out to its inevitable death. Great compilation! Is my clown loach lethargic and not eating? Its my first time keeping fish and im going for a 5 gallon aquarium could you summarize as to which of the species that you have mentioned are the most hardy and forgiving? Though I said they could tolerate hard aquarium conditions, I do not encourage you to stress them just because they are survivors. Please do not get the impression that the Dario Dario is by nature hot-headed; they are actually peaceful as long as there are no others like them to compete with. 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