Search Species
Search for fish species by common or scientific name, or use filters to browse by water type, size, temperament, and difficulty.
Found 419 species
Barbedwire-tailed skate
Notoraja martinezi
Notoraja martinezi is a deepwater skate from the eastern Pacific (Costa Rica down to Ecuador) that lives way down on soft bottoms. The tail is the giveaway - it is lined with strong, hooked thorns that really do look like barbed wire. This is absolutely not an aquarium fish; it is a cold, high-pressure deep-sea animal with basically no practical home care info because it is not kept in the hobby.
Barlip reef-eel
Uropterygius kamar
Uropterygius kamar is a smaller moray (a reef-eel) that spends its time tucked into rockwork and coral rubble, poking its head out when it smells food. FishBase notes it comes in two color morphs and lives on reef-associated rubble areas, so in a tank it really appreciates lots of tight caves and crevices. Like most morays its whole vibe is secretive ambush predator, not open-water swimmer.
Barred snake eel
Quassiremus polyclitellum
This is a temperate, demersal snake eel (Ophichthidae) known from New Zealand, collected from moderately deep water over rocky ground (reported depth range ~35–58 m). It is not commonly represented in aquarium care literature and should be considered a wild marine species rather than a typical aquarium trade eel.
Barred-chin blenny
Rhabdoblennius nitidus
This is a tiny intertidal combtooth blenny that lives right up in surge channels and tide pools, so it is built for getting smacked around by waves and still acting like it owns the rock. Males guard eggs in little nests and the species has some seriously interesting breeding behavior, which is very blenny-like. In the hobby its not a common aquarium fish, but if you ever run into one you would treat it like a small, rock-perching marine blenny with lots of hiding spots and strong oxygenation.
Barrier reef anemonefish
Amphiprion akindynos
This is one of the cooler Great Barrier Reef clowns - orange-brown with two crisp white bars edged in black and that pale tail. Give it a spot to claim (ideally with an anemone or at least a comfy coral substitute) and it will settle in hard, pair up, and act like the little boss of its corner.
Ben-Tuvia's goby
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.
Bertelsen's duckbill conger
Gavialiceps bertelseni
Deepwater marine conger eel from off western/southwestern Madagascar (western Indian Ocean), reported from roughly 670–1200 m depth; maximum length about 84 cm TL (reported for males). Not a typical aquarium species due to deepwater habitat.
Bicolored foxface
Siganus uspi
Siganus uspi is that super sharp-looking Fiji rabbitfish with the hard two-tone split - dark front half, bright yellow rear half. It is an algae-grazer that tends to cruise calmly, but it has venomous fin spines, so you treat it with respect any time you are netting or working in the tank.
Bidentate conger
Xenomystax bidentatus
A deepwater conger eel (family Congridae) from the tropical western central Atlantic off northern South America, reported from roughly 494–604 m depth; not a species typically encountered in the aquarium trade.
Big-eye anchovy
Anchoa lamprotaenia
Anchoa lamprotaenia is a slim, silvery little anchovy from warm western Atlantic coastal waters, with that clean silver side stripe and big eyes that make it look extra sharp. It is a pelagic, open-water schooling fish that spends its life cruising near the surface and picking zooplankton out of the water column. In practice its not really an aquarium species, because it wants constant swimming room, high oxygen, and a steady supply of tiny foods.
Bigeye brotula
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.
Bigeye clingfish
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.