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 358 species
Gastromyzon fasciatus
Gastromyzon fasciatus is one of those super-cool little Borneo hillstream loaches that scoots around rocks like a tiny stingray and parks itself in the current. It really shines in a river-style setup with lots of smooth stones to graze on and high oxygen - they look busy all day and have a neat, banded pattern.
Nannoglanis fasciatus
This is a tiny little Ecuadorian heptapterid catfish with bold banding - a real under-the-radar oddball that almost never shows up in shops. Since there is basically no solid aquarium-care literature for it, I would treat it like a small, shy, bottom-hugging Amazon/upper Amazon tributary catfish: lots of cover, gentle flow, and clean, well-oxygenated water.
Ambassis urotaenia
This is one of those see-through glassy perchlets where you can literally watch the organs shimmer when it turns-super cool in the right lighting. In the wild it hangs around river mouths and mangroves and cruises in groups, so it does best when you keep a little gang of them and give them some open swimming room.
Pterapogon kauderni
Banggai cardinals just sort of hover like little underwater satellites, and the bold black bars with those long, polka-dotted fins look unreal under reef lighting. They're super chill most of the time, but once a pair forms you'll see real "fish drama," and the male will even mouthbrood the babies like a champ.
Urocampus nanus
Urocampus nanus is a skinny little pipefish from sheltered seagrass and estuary areas around southern Japan and nearby coasts, where it hangs out down low among eelgrass. The really wild part is the males brood the eggs in a pouch under the tail and give birth to fully formed mini pipefish. Its care is basically "pipefish rules" - calm tank, lots of live/frozen tiny meaty foods, and tankmates that will not outcompete it at feeding time.
Quintana atrizona
This is a tiny Cuban livebearer that likes to lurk in thick plants and do that classic livebearer "hover and peck" routine all day. The cool part is the subtle black barring and how the fish kind of vanishes into floating plants, then pops right back out when food hits the water.
Atherinella blackburni
This is a little coastal silverside that cruises the shallows in loose groups and flashes like a tiny chrome dart when the light hits it right. In the wild it hangs around beaches, estuaries, and lagoons, picking at small drifting foods in the surf zone. It is cool, but its real "gotcha" is that it is an open-water, salt-tolerant schooling fish that does best in bigger, well-oxygenated setups rather than a typical planted community tank.
Didogobius bentuvii
This is a tiny little Mediterranean goby from the Israeli coast that lives down on the bottom over muddy-sand, and it is likely a burrower. In other words, it is a blink-and-you-miss-it kind of fish - super small, demersal, and more about sneaky bottom-dweller vibes than flashy swimming.
Glyptophidium longipes
Glyptophidium longipes is a deepwater cusk-eel (brotula) from the western Indian Ocean - a slender, eel-ish fish with oversized eyes and long ventral-fin rays. It is a bathyal slope species from a few hundred meters down, so its real-world needs (cold, dark, high-pressure habitat) make it essentially an observation-only "research" animal rather than a practical aquarium fish.
Kopua nuimata
Kopua nuimata is a tiny deepwater clingfish with big eyes and a neat pink-and-orange banded pattern. It lives way down on reefy slopes (roughly 160-337 m), so its "care" is mostly academic - its natural habitat is cold, dark, high-pressure water that we just do not replicate in home aquariums.
Brachyrhaphis episcopi
This is a tiny Panamanian livebearer that does best when you treat it more like a shy wild fish than a fancy guppy-lots of cover, calm vibes, and really clean water. The fun part is watching the males posture and spar while the females cruise around dropping fully-formed fry about once a month.
Hyphessobrycon herbertaxelrodi
Black neons are one of those little tetras that look kinda understated until the light hits them-then that bright stripe pops and they shimmer when the school turns together. They're super chill, always cruising mid-water, and they make a tank feel "alive" without being hectic. If you keep a nice group, they get bolder and you'll see way more of their personality.