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 130 species
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.
Dichotomyctere nigroviridis
Green spotted puffers are little water puppies with fins-super curious, always watching you, and they'll beg like they've never been fed in their life. The bright green-and-black spotting stays eye-catching, and they've got that classic puffer "I'm plotting something" face. Just know they're not a true freshwater fish long-term, and they really do need crunchy foods to keep their teeth worn down.
Dichotomyctere ocellatus
This is the little "figure-8" puffer with the yellow-green squiggles and the two bold eyespots near the tail-tons of personality in a small body. They're basically snail-hunting machines with a curious, interactive vibe, but they can be spicy with their own kind, so you plan the tank around that.
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Dichotomyctere ocellatus (syn. Tetraodon biocellatus)
This is the small "Figure 8"/eyespot puffer with two bold eyespots and a yellow-green maze-like pattern. They're interactive and can be fin-nippy and territorial, especially toward other puffers. Husbandry advice on salinity varies by source: FishBase lists it as a freshwater species, while many aquarium references recommend low-end brackish (often around SG ~1.005-1.008) for long-term keeping, with very clean, stable water.
Dicrossus filamentosus
Dicrossus filamentosus is that classy little blackwater dwarf cichlid with the crisp "chessboard" pattern and, in mature males, a super cool lyretail with streamers. It's generally mellow and shy, but when a female is guarding eggs/fry she turns into a tiny, fearless bulldozer (and it's honestly awesome to watch). Give them soft, clean water, leaf litter, and calm tankmates and they really settle in and show their best colors.
Ecsenius midas
Midas blennies are those weirdly "blenny-but-also-open-water" fish that zip around the tank like a tiny golden torpedo, then duck into a hole like nothing happened. They'll even color-shift and loosely school with anthias in the wild, which is honestly one of the coolest behaviors you'll see in a reef fish.
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.
Fundulopanchax gardneri
Gardneri are those little West African killies that look like someone painted neon speckles and flag-fins onto a 2-inch fish. The males will posture and flare at each other but its more drama than damage, and they will absolutely reward you with constant spawning if you give them mops or fine plants. Biggest things to know: keep a tight lid (they jump) and do not cook them warm - they do best in the low-to-mid 20s C.
Fundulopanchax sjostedti
This is the big, flashy West African killifish with the ridiculous triple-point tail and electric blue-green body covered in red spotting. Males can be real attitude machines with each other, but if you give them room, cover, and a tight lid, they make an awesome centerpiece fish that will absolutely demolish live and frozen foods.
Gasterosteus aculeatus
The three-spined stickleback is a small, armored fish with bony lateral plates and three prominent dorsal spines used for defense. Males become striking in breeding condition, often developing a red throat/belly and intensified coloration while they build and guard nests. It is highly active and behaviorally interesting, but can be nippy and territorial, especially during breeding.
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.
Gramma loreto
Royal grammas are that classic purple-to-yellow Caribbean basslet that likes to claim a cave and hover around it (sometimes totally upside-down under a ledge). They're usually chill with tankmates, but they can get spicy with other grammas/basslets/dottybacks if space is tight-give them rockwork and a "home" cave and they settle right in.