Search Species
Search for fish species by common or scientific name, or use filters to browse by water type, size, temperament, and difficulty.
Found 337 species
Dwarf pleco
Parotocinclus cristatus
A tiny Parotocinclus from coastal streams around Ilheus, Bahia, it acts like a mini pleco that spends its day grazing biofilm on rocks, wood, and leaves. Keep a small group in clean, well-oxygenated water and you will see them constantly scooting and shimmying around while they pick at algae.
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.
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.
European gudgeon
Gobio gobio
The European gudgeon is a small bottom-dwelling cyprinid with a slender body, sandy-brown mottling, and distinct barbels at the corners of the mouth used to locate food in the substrate. It is an active schooling fish that prefers well-oxygenated water and a sand or fine-gravel bottom, often resting on the substrate between foraging bouts. Best kept in cool, river-style aquariums with moderate flow rather than warm tropical setups.
Evezard's loach
Indoreonectes evezardi
This small Indian brook/stone loach occurs in stream habitats in India (Western Ghats and Satpura range). The species includes cave-adapted forms (e.g., reported from Kotumsar Cave) that may show reduced pigmentation and regressed eyes.