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 351 species
Wuhanlinigobius polylepis
This is a tiny mangrove-and-mudflat goby from the western Pacific that spends its time on the bottom, often in really shallow brackish areas. The cool part is how "muddy" its lifestyle is - it gets found in puddles on exposed mud at low tide and can even be partly buried, so it appreciates a soft substrate and lots of cover if you ever try one.
Pristella maxillaris
This is that little see-through tetra where you can kinda make out the spine inside the body, and then it tops it off with those sharp black/yellow/white fin markings and a reddish tail. Super chill schooling fish, and it's one of those rare tetras that doesn't freak out if your water isn't "perfect Amazon blackwater" 24/7.
Yunnanilus analis
Yunnanilus analis is a little bottom-hugging stone loach from China, originally described from Xingyun Lake in Yunnan. Its species name is literally about the anal fin - it has six branched anal-fin rays, which is a weirdly specific ID feature. This one is not an aquarium regular, so if you ever actually see true Y. analis for sale, it would be a pretty unusual find.
Xiurenbagrus xiurenensis
This is a tiny little Chinese torrent catfish from the Pearl River drainage - think bottom-hugging, hidey fish that wants clean, oxygen-rich water. It stays around 10 cm/4 inches and is more of a nighttime rock-and-crevice cruiser than a "front glass" pet. If you set it up like a cool, fast stream with lots of cover, it should act way more confident.
Triplophysa xiqiensis
Triplophysa xiqiensis is a little Chinese stone loach from cool, flowing hill-stream type water, and it lives right on the bottom picking around the substrate. It is the kind of fish that spends its day cruising and perching on rocks, so it is way more about behavior and habitat vibes than flashy color.
Yunnanilus yangi
Yunnanilus yangi is a small freshwater stone loach (Nemacheilidae) described in 2024 from Yunnan, China (upper Pearl River/Nanpanjiang drainage). Species-specific aquarium guidance is limited in the literature; husbandry is typically inferred from related small Yunnanilus/Micronemacheilus-type loaches, emphasizing clean, well-oxygenated water, cover, and small foods.
Hyphessobrycon roseus
Hyphessobrycon roseus is a small phantom-type tetra (syn. Megalamphodus roseus) from the Maroni and Oyapock river basins (French Guiana/Guianas region). It is best kept in a planted, softwater setup in a group, where males may display but are generally peaceful.
Zaireichthys flavomaculatus
Zaireichthys flavomaculatus is a truly tiny, bottom-hugging African loach catfish from the Congo basin that spends its time tucked into sand and gaps like a little river goblin. Its yellowish base color with blotchy/marbled spotting is the whole vibe, and it is the kind of fish you keep because you love oddball micro-predators and watching subtle behavior, not because it is always out front.
Pervagor alternans
This is a little reef filefish with that classic sandpapery skin and a super eye-catching yellow ring around the eye. It spends a lot of time poking around rock and coral, and when it gets spooked it kind of eases back into crevices instead of bolting. Not the most common aquarium fish, but really neat if you can get one that is eating well.
Noturus flavipinnis
Yellowfin madtoms are tiny, secretive native catfish from the upper Tennessee River system, and they act exactly like little river goblins - hiding under flat rocks all day and cruising around at night. The cool part is the male guards the eggs under cover, and they really appreciate clean, well-oxygenated current and a rock-and-leaf-litter kind of setup.
Opistognathus nothus
This is a deepwater Atlantic jawfish that lives in burrows on sand and rubble, and it has that classic jawfish vibe of popping up like a little periscope from its hole. The yellow edging inside the mouth is the giveaway, plus the spotty head and striped/yellow-edged fins. Because it comes from about 92-100 m depth, it is not something you should treat like a typical warm, shallow-reef jawfish in a home tank.
Hemimyzon yushanensis
This is a little Taiwan hillstream loach that lives its whole life clinging to rocks in fast, super-oxygenated streams. In a tank it does best in a "river" setup with smooth stones and lots of flow, where it will spend all day grazing biofilm and cruising the glass like a tiny underwater gecko.