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
Hyphessobrycon elachys
This is one of those tiny Paraguay-basin tetras that looks kind of understated until the males mature and start throwing those longer, flowy fins - then it gets really classy. Keep them in a proper little group and theyll spend the whole day hovering and cruising the midwater, looking extra sharp over dark substrate and plants.
Acheilognathus fasciodorsalis
Acheilognathus fasciodorsalis is a freshwater bitterling endemic to Vietnam. Like other bitterlings (Acheilognathidae), reproduction involves females using an ovipositor to deposit eggs in freshwater mussels.
Wallaciia virgatula
This is one of the little "dwarf" pike cichlids (recently moved out of Crenicichla into Wallaciia), so you get that sleek pike-cichlid look and attitude in a genuinely small package. Expect a smart, ambushy micro-predator vibe - it will hang around cover, watch everything, then dart in like a mini torpedo when food hits the water.
Foa brachygramma
This is a tiny Hawaiian cardinalfish that hangs around sheltered shallows - think seagrass, algae, and rubble - and it even wanders into brackish and sometimes fresh water. Its vibe is classic cardinalfish: mellow, a little shy, and way more interesting once the lights go down. Also cool trivia: the males mouthbrood the eggs.
Rineloricaria henselii
Rineloricaria henselii is a small loricariid (whiptail) catfish from southern Brazil (reported from the Cubatão River, Santa Catarina) reaching about 7.5 cm standard length.
Farlowella acus
Farlowella acus is that classic twig-looking whiptail that can sit on wood and basically disappear - it really does look like a little stick with fins. It is super chill and spends most of its time grazing and picking at surfaces, so it does best in a mature tank with stable water and plenty of stuff to cling to.
Tanichthys albonubes
White Clouds are tiny little stream minnows with that neat glowing stripe and red-tipped fins, and they look way better the cooler you keep them. They're super active in a group and do this constant "busy schooling" thing in the top/middle of the tank-really fun fish when you give them space to zip around.
Betta albimarginata
This is one of those wild bettas that feels more like a tiny aquarium predator than a "fancy fin" betta-sleek, quick, and always watching what's going on. The males are awesome with that crisp white edging on the fins, and the coolest part is the dad carries the eggs in his mouth, so you'll sometimes see him just chilling and not eating for a bit while he incubates.
Rhinogobius duospilus
This is one of those little stream gobies that acts like it's glued to the rocks-its pelvic fins form a suction-cup so it can hang out in flow. Males can color up really nicely and they'll claim a favorite cave/stone like a tiny bouncer, but in a well-structured tank they're super fun to watch cruise the bottom and perch.
Wetmorella albofasciata
This is one of those tiny, cryptic wrasses that spends a lot of time weaving through rockwork and poking into little cracks like it is on a constant scavenger hunt. The big eyes and sharp snout give it a weird-cute "mini predator" look, and it really shines in a peaceful reef where it feels safe enough to come out and cruise.
Trimma woutsi
Trimma woutsi is a true pygmy reef goby - maxing out around an inch - that spends its life perched close to the rockwork in shallow reef zones. Its tiny size is the whole game here: it is perfect for a peaceful nano reef where it can pick at micro-foods all day and not get bullied off meals.
Dermogenys pusilla
This is that quirky little surface-dweller with the long lower "beak" that's always cruising the top and snapping at food. The males do these goofy jaw-locking sparring matches (that's where the "wrestling" name comes from), so you'll want space and lots of floaters to keep everyone chill. They're also famous jumpers-tight lid is non‑negotiable.