Search Species
Search for fish species by common or scientific name, or use filters to browse by water type, size, temperament, and difficulty.
Found 541 species
Dwarf pufferfish (Pea puffer)
Carinotetraodon travancoricus
This is the famous pea puffer-tiny (around 3.5 cm max) but it acts like a full-size puffer, cruising around and hunting little critters with a ton of attitude. If you give it a heavily planted tank with lots of line-of-sight breaks, you'll get to watch really cool "stalking" behavior all day.
Eastern mudminnow
Umbra pygmaea
Eastern mudminnow (Umbra pygmaea) is a small freshwater umbrid native to eastern North America that inhabits slow, vegetated waters such as swamps, ponds, and ditches. It feeds mainly on insect larvae and small aquatic invertebrates and is noted for tolerance of low-oxygen wetland habitats.
Edward cichlid
Haplochromis pharyngalis
This is one of those Lake Edward haplochromines that has the typical sleek, fast "hap" shape and attitude. It is not something you see in the average fish store, but if you do find it, treat it like a medium-sized African cichlid that appreciates hard, alkaline water and some real swimming room.
Elongate killifish
Titanolebias elongatus
Titanolebias elongatus is a giant annual killifish from temporary waters in the Lower Parana-La Plata basin - it grows way bigger than most "typical" killies and has that chunky, predatory vibe. It is a bottom spawner with a long egg diapause (months), and its whole lifestyle is built around racing the dry season, which is just wild to watch and work with if you are into breeding projects.
Ember tetra
Hyphessobrycon amandae
Ember tetras are tiny little orange "glow fish" tetras that look insanely good over a dark substrate with plants and a bit of leaf litter. They're happiest in a proper little gang, and when they settle in and feel safe the whole school starts moving like one warm, flickery cloud.
Emperor tetra
Nematobrycon palmeri
Emperor tetras are those classy little Colombian characins with the dark horizontal stripe and the males' awesome trident/lyretail look. Keep a decent-sized group and you'll see the males do their little posturing displays without really hurting each other, especially in a planted tank with some shade.
Endler's livebearer
Poecilia wingei
Endlers are basically tiny little firecrackers-males stay small but flash a ton of neon color and never stop cruising the tank. They're super social and active, and if you keep males and females together you'll have babies before you've even finished tweaking the aquascape.
Engkarit
Osteochilus partilineatus
Osteochilus partilineatus is a tiny little bony-lipped barb from West Kalimantan (Borneo) that lives in deep, blackwater forest streams with flowing water. Its small adult size is the cool part here - it is one of those "wait, that is an Osteochilus?" species - but it is not really a standard aquarium fish, so most of its care is best approached like a sensitive blackwater river/stream cyprinid.
Epulu alestid
Brachyalestes epuluensis
Brachyalestes epuluensis is a Congo Basin African tetra relative from the Epulu River system in DR Congo. It is a mid-sized, torpedo-shaped schooling fish (max about 11 cm standard length) that would act a lot like other African tetras in the tank - always cruising and looking for food. The tricky part is there is basically no aquarium-specific care info published for this exact species, so you keep it successfully by treating it like a small-to-medium riverine alestid and focusing on clean, well-oxygenated water and room to swim.
Eregli minnow
Garra kemali
Garra kemali is a tiny Turkish Garra that hangs close to the bottom and spends a lot of time grazing surfaces for edible bits. It comes from marshes and lakes rather than the typical fast riffles people associate with many other Garra, and its wild populations are considered endangered, so its story is more conservation-focused than aquarium-trade focused.
Eriarcha rhamdella
Rhamdella eriarcha
Rhamdella eriarcha is a shy little South American three-barbeled catfish (Heptapteridae) that spends a lot of time tucked under wood and cruising the bottom after dark. It gets a lot bigger than most people expect for a "small" catfish, so think more "subtle nocturnal predator" than "tiny cleanup fish".
Eurasian Minnow (Common Minnow)
Phoxinus phoxinus
Phoxinus phoxinus is a small, fast-swimming minnow associated with cool, well-oxygenated waters. It is a gregarious shoaling fish; males intensify in colour during breeding. Note: the name P. phoxinus has historically been applied broadly across Eurasia, but the group is now treated as a species complex in which true P. phoxinus may be restricted to parts of Western Europe.