Search Species
Search for fish species by common or scientific name, or use filters to browse by water type, size, temperament, and difficulty.
Found 563 species
Short-tail lanternfish
Gymnoscopelus opisthopterus
This is a coldwater deep-sea lanternfish from the Southern Ocean that spends its life way down in the dark and uses photophores (light organs) like a little living constellation. Its habitat is near-freezing and very deep, so it is really a research-specimen kind of fish rather than something that can be kept in a normal aquarium.
Sicklefin redhorse
Moxostoma ugidatli
This is a big, river-dwelling redhorse sucker from the southern Appalachians, and that crazy tall, sickle-shaped dorsal fin is what gives it away. Its Cherokee name (ugidatli, "it wears a feather") is straight-up perfect when you see the profile, and its whole vibe is clean, cool, fast water with lots of oxygen.
Silver cusk
Glyptophidium argenteum
Glyptophidium argenteum is a deepwater/bathydemersal cusk-eel (Ophidiidae) from the Indo-West Pacific (e.g., Bay of Bengal to the Philippines) recorded hundreds of meters deep. It is primarily known from scientific/monitoring collections and deepwater fisheries bycatch rather than the aquarium trade.
Silver moony (Mono)
Monodactylus argenteus
Silver moonies are those shiny, diamond-shaped "mono" fish you see cruising nonstop in brackish tanks-super active and way more fun to watch when they're in a proper group. They start out in estuaries (often sold too small and too fresh), and the big "gotcha" is they really want you to ramp them up to stronger brackish/near-marine as they grow. Feed them like a hungry, messy omnivore and give them swimming room, and they're absolute show-stealers.
Silverbelly cardinalfish
Jaydia photogaster
Jaydia photogaster is a small, nocturnal cardinalfish from the western Pacific that hangs around deeper lagoon patch reefs and tends to be seen solo or in little loose groups. The really neat bit is the silvery belly light-organ system (hence the name) and the subtle dusky bars down the sides - it is one of those understated fish that looks way cooler the longer you stare at it.
Sin croaker
Johnius dussumieri
Johnius dussumieri (sin croaker) is a coastal marine sciaenid of the Indian Ocean region (e.g., Pakistan to NW Peninsular Malaysia) associated with nearshore/benthic habitats and also recorded from estuarine systems. It is a commercially utilized food fish and is not commonly maintained in aquaria.
Singapore glassy perchlet
Ambassis kopsii
Ambassis kopsii is one of those cool little see-through mangrove/estuary fish that likes to hang out in a tight group, flashing silver in the light. It naturally lives where fresh and saltwater mix, so it does best when you treat it like a calm, slightly brackish schooling fish and give it lots of friends.
Skipper halfbeak
Hyporhamphus snyderi
This is a sleek little open-water halfbeak from the Tropical Eastern Pacific, with that classic underbite beak and a silvery body with dark lines along the back. Its whole vibe is cruising the surface in a school, so if you ever tried keeping one you would be planning around swimming room and a seriously escape-proof lid.
Slate cory
Hoplisoma concolor
Corydoras concolor is that deep slate-gray, chunky little cory that looks almost like a moody, high-backed cousin of the bronze cory. Give them a soft sand bottom and a group to hang with, and you will see those neat rusty-orange fin flashes when they are comfortable. They are bottom cruisers that spend all day sifting and snuffling for food, and they will dart up for air now and then (totally normal).
Slender abyssal cusk-eel
Sciadonus pedicellaris
Sciadonus pedicellaris is a rare deep-sea livebearing brotula (family Bythitidae) with a very slender body, small deep-set eyes, and loose translucent skin; it occurs at bathyal to abyssal depths and is not suited to typical aquarium care. The name refers to the stalk-like (“pedicellate”) pectoral-fin base.
Slender grenadier
Ventrifossa teres
Ventrifossa teres is a deep-slope rattail (grenadier) from the southeast Pacific, built like a skinny little torpedo with that classic big-head-tapering-tail grenadier look. Its whole deal is living way down in the dark (hundreds of meters deep), so its "aquarium care" is basically a public-aquarium-only kind of fish, not a home tank species.
Slender lightfish
Vinciguerria attenuata
This is a tiny deep-water lightfish that spends its life way out in the ocean twilight zone, cruising up and down the water column each day. It has rows of photophores (little light organs) on the underside, plus those slightly tubular eyes that are built for looking up in the dark. Super cool biology, but realistically its not an aquarium fish at all.