Search Species
Search for fish species by common or scientific name, or use filters to browse by water type, size, temperament, and difficulty.
Water Type
Search for fish species by common or scientific name, or use filters to browse by water type, size, temperament, and difficulty.
Found 365 species
Xenocypris hupeinensis
Xenocypris hupeinensis is a freshwater sharpbelly (family Xenocyprididae) endemic to China, reported from the middle and upper reaches of the Changjiang (Yangtze) River system, with a maximum recorded length of about 25.6 cm TL. Aquarium husbandry information appears scarce in mainstream hobby references; any care guidance should be treated as extrapolation from similar open-water cypriniform fishes rather than species-specific data.
Naso brachycentron
This is the big, open-water cruising unicornfish with that chunky hump on the back and a horn that really shows up on adult males. In the ocean youll see them in small groups (sometimes big schools) working reef slopes and rocky areas, grazing algae and just covering ground all day. In aquariums the main thing is simple: it gets enormous and needs a truly massive, stable system to thrive.
Yarica hyalosoma
This is a chunky little cardinalfish that hangs out in mangrove creeks and river mouths, often in small groups in shallow, shady water. The look is super distinctive - pale/translucent body, and that bold black spot at the base of the tail - and like a lot of cardinalfish, the males mouthbrood the eggs.
Jaydia hungi
Jaydia hungi is a little marine cardinalfish from the western Indian Ocean (including the Red Sea) that spends its time down near the bottom and comes alive more at night. Like a lot of cardinalfish, the cool party trick is the male mouthbroods the eggs, so breeding behavior is way more interesting than you would guess from a small, silvery fish.
Foa hyalina
This is a tiny little reef cardinalfish that looks almost glass-clear with a few reddish-brown stripes, so it kind of vanishes when it hangs in soft corals. In the wild it tends to be solitary and it tucks itself into Sinularia-type soft coral for cover, then comes alive more at night like a lot of cardinals do. Like other apogonids, it is a mouthbrooder, so once you see a male holding, he will go off food for a bit.
Neosilurus hyrtlii
This is an Aussie eel-tail catfish that looks like a sleek little catfish-meets-eel, especially when it flashes those yellow fins. It spends a lot of time cruising the bottom and hoovering up meaty bits, and it can get way bigger than people expect if you keep it well fed and give it swimming room.
Iberochondrostoma lemmingii
This is a temperate Iberian river leuciscid that typically inhabits middle-to-lower river reaches with weak to moderate current and abundant aquatic vegetation. It feeds largely on algae/detritus and also zooplankton and small aquatic invertebrates. It is a native conservation-interest species in parts of its range and is not commonly encountered in the aquarium trade.
Knipowitschia iljini
This is a tiny Caspian Sea dwarf goby that sticks close to the bottom and tops out under 2 inches. The big catch is it is a deep-water, brackish/sea-influenced fish from the Caspian, so its real-world habitat needs (salinity, temperature, pressure/oxygen) make it a super uncommon aquarium candidate.
Imparfinis piperatus
Imparfinis piperatus is a tiny Brazilian heptapterid catfish that spends its time down on the bottom, scooting around like a little stream goblin. It stays really small (around 3.2 cm SL max), and the neat part is the subtle mottled/striped look and those long barbels that make it look way more "catfish" than its size suggests. Not super common in the aquarium trade, but it is a cool pick if you are into South American stream setups.
Lampanyctus indicus
Lampanyctus indicus is a tiny deep-sea lanternfish from the equatorial Indian Ocean. Like other myctophids it has rows of light organs (photophores) and does the classic up-and-down daily migration in the water column. Super cool animal, but realistically its a research/deep-ocean species, not an aquarium fish.
Parambassis ranga
This is the classic see-through "glassfish" where you can literally see the bones and organs-super cool in a planted tank with calm tankmates. They're happiest when you keep a little crew of them (they get braver and way more active in a group). Also: skip any dyed/painted ones-those fish are usually in rough shape from the process.
Deveximentum indicium
This is a little ponyfish (slipmouth) from coastal seas and brackish edges, with that classic super-protrusible, upturned mouth they can shoot forward when they feed. Silvery body, some dark facial marking, and it tends to be a schooling, open-water kind of fish rather than a hide-in-the-rocks type.