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
Stripefin poacher
Xeneretmus ritteri
This is that quirky, armored little bottom-creeper from deep, cold water off Southern California and Baja. It tops out around 16 cm and shuffles over soft mud with stiff, paddle-like fins, which is fun to watch. Super cool fish, but it really needs a chilled marine setup to be comfortable.
Stripefin ronquil
Rathbunella hypoplecta
This is a little bottom-hugging California coast fish that hangs around rocky and sandy spots and spends a lot of time tucked into structure. It eats small invertebrates and the male actually guards the eggs, which is pretty cool if you are into fish with real parenting behavior.
Stripefin ronquil
Rathbunella alleni
Rathbunella alleni is a little bottom-hugging coastal marine fish from California down into Baja, the kind that spends its time tucked around structure and cruising the seafloor. Its claim to fame is that slick blue stripe running along the anal fin (especially noticeable on males), plus that blenny-ish, prickleback vibe that makes it look like it belongs in a tidepool documentary.
Suborbital lanternfish
Diaphus suborbitalis
This is a little deep-sea lanternfish from the Indo-West Pacific that spends its life way down in the dark and uses photophores (light organs) like a built-in nightlight. It tops out around 7.3 cm standard length and is a true pelagic ocean fish, not something you will realistically see in the aquarium trade.
Sunda viviparous brotula
Ungusurculus sundaensis
This is a tiny little reef-dwelling brotula that lives tucked into cracks and crevices in very shallow water. The wild thing about these guys is they are livebearers (viviparous), which is pretty unusual among marine fishes, and they tend to be super cryptic and solitary.
Taiwan croaker
Johnius taiwanensis
A coastal croaker from the Taiwan Strait, this little drum sports a gray back cleanly split from a pale belly and a neat black dot at the top of the pectoral fin base. It is a sound-maker too, using its swim bladder to drum, which is fun to hear in a quiet room. Think active bottom-side cruiser that appreciates open sand and gentle flow.
Taiwanese Razorfish
Iniistius evides
A sleek sand-diver with a knife-like forehead, this wrasse rockets into fine sand the instant it gets spooked and tucks in there to sleep. Give it open swimming room and a soft sand bed and it will spend the day cruising and picking small critters off the substrate. It is jumpy, so a tight lid is a must.
Tanaka's possum wrasse
Wetmorella tanakai
This is one of those tiny, sneaky reef wrasses that basically lives in the rockwork and pops out to hunt little micro-bugs all day. The red-orange body with thin white bars and those little "eye spots" on the fins make it a really cool "where did that fish come from?" kind of addition. It is super peaceful, but it does best in a mature reef where it can graze and not get pushed around.
Tang's snapper
Lipocheilus carnolabrum
This is a deepwater snapper with a really distinctive "lumpy" fleshy upper lip - once you know that look, you spot it right away. It lives way down on rocky shelf bottoms and is more of a food-fish than an aquarium fish, mostly because it gets big and comes from colder, deeper water than a typical reef tank setup.
Taper-tail ribbonfish
Zu elongatus
Picture a flat, silvery ribbon of a fish with bright red pelvic fins - that is Zu elongatus. Adults roam the deep open ocean, while the youngsters hang near the surface with crazy long fins that mimic jellyfish and siphonophores. It is awesome to read about and spot in bycatch photos, but it is not a home aquarium candidate.
Tasmanian ruffe
Tubbia tasmanica
Tubbia tasmanica (Tasmanian ruffe / Tasmanian rudderfish) is a deepwater marine medusafish (Centrolophidae) from temperate Southern Hemisphere waters (Tasmania, New Zealand, and reported off Natal, South Africa), recorded to about 850 m depth and reaching about 67 cm TL; it is not an aquarium-trade species.
Tchefou cardinalfish
Jaydia tchefouensis
Jaydia tchefouensis is a little marine cardinalfish (Apogonidae) originally described from Chefoo/Tche-Fou (modern Yantai), China. Real talk: this name is kind of messy in the literature and may actually be a junior synonym of Jaydia lineata, so you will almost never see it sold under this exact ID in the aquarium trade. Like other cardinalfish, expect a shy, nocturnal vibe that hangs near structure and picks off small meaty foods.