Search Species
Search for fish species by common or scientific name, or use filters to browse by water type, size, temperament, and difficulty.
Found 528 species
Indian sevenfinger threadfin
Filimanus similis
Filimanus similis is a small marine threadfin from the Indian Ocean with seven long, finger-like pectoral filaments it uses to feel around the bottom for food. Its color in life is usually brownish on top with a golden/silvery belly, and the fins often show darker edging, so it has that neat sandy-coast vibe. This is a demersal (bottom-associated) coastal species that shows up in trawl catches rather than the aquarium trade.
Indonesian sawtail
Prionurus chrysurus
A Prionurus (sawtail) surgeonfish from southern Indonesia with a distinct yellow caudal fin and fixed bony plates (“sawtail”) on the caudal peduncle; described from cool upwelled seas.
Insolitus sand eel
Yirrkala insolitus
A small tropical marine snake eel (Ophichthidae) described from New Caledonia; known from demersal habitat to about 59 m depth and reaching at least 25.8 cm TL (female). Aquarium husbandry information appears scarce because the species is rarely encountered in the trade.
Iyo jawfish
Opistognathus iyonis
Tiny sand-burrower from southern Japan and Korea that spends the day peeking out of a tunnel it builds from sand and shell bits. Males mouthbrood the eggs, and this species prefers cooler marine temps than typical reef fish, so give it a deep sand bed, some rubble, and a tight lid since they jump.
Izu dragonet
Callionymus izuensis
This is a little Japanese sand-dwelling dragonet from around the Izu Islands. Think of it as a bottom-hopper that hangs out on coarse sand and rubble and spends its time picking at tiny critters like most dragonets do. Super cool fish, but it is really more of a niche, species-tank kind of project than a casual community add.
Japanese deepwater clingfish
Aspasma minima
Aspasma minima is a tiny little marine clingfish from southern Japan that spends its life hugging hard surfaces with that cool suction-disc belly. Its whole vibe is secretive and bottom-oriented, more like a micro predator you design a tank around than a "community fish" you toss in with everything.
Japanese dory
Zenion japonicum
Zenion japonicum is a small deepwater dory from way down on the continental slope - silvery, big-eyed, and kind of "alien-cute" in that zeiform way. This is not an aquarium fish in any normal sense (it lives hundreds of meters deep in cold water), but it is a really neat bycatch species with that classic dory shape and spiny fins.
Japanese goatfish
Upeneus japonicus
A sandy-bottom cruiser from Japan and the Western Pacific, the Japanese goatfish uses its whisker-like barbels to sift the sand for snacks. It gets big for home tanks and really needs coolish marine water, lots of open swimming room, and frequent small meaty feedings to stay in top shape.
Japanese meagre
Argyrosomus japonicus
Big silver croaker from the Indo-Pacific, the Japanese meagre grows huge and makes those classic drum-like calls during courtship. Juveniles hang in estuaries, adults roam just beyond the surf and nearshore reefs. Super cool fish to admire in the wild, but way too big for home tanks.
Japanese scorpionfish
Rhinopias argoliba
Rhinopias argoliba is one of those sit-and-wait ambush predators that basically looks like a chunk of reef rubble until it decides to inhale something whole. Its claim to fame is that pale teardrop mark under the eye and the more "clean" look (fewer frilly appendages) compared to some other Rhinopias. Super cool fish, but you plan the whole stocking list around its mouth size and the fact it is a venomous scorpionfish.
Japanese silver-biddy
Gerres equulus
Gerres equulus (Japanese silver-biddy) is a temperate, demersal coastal mojarra from the northwest Pacific (southern Korea to southern Japan), typically over sandy shallows; it is generally reported as absent from the Ryukyu Islands. It is primarily a coastal fish and is not commonly maintained in home aquaria; if kept, provide ample open swimming space and stable marine conditions.
Japonoconger africanus
Japonoconger africanus
A deep-water conger eel from the eastern Atlantic (Gabon to Republic of the Congo), bathydemersal at roughly 250–650 m. Max length about 42.5 cm TL. Feeds on benthic fishes, shrimps, and crabs. Modeled preferred temperatures from occurrence data are ~3.8–5.9 °C, which together with its depth range makes it effectively unsuited to home aquaria; there is no established captive-care protocol.