Species

Akysis portellus

A tiny venomous stream catfish from Myanmar that's easier to keep than it looks.

Akysis pulvinatus

A pint-sized Thai hillstream catfish that hides among rocks and rarely reaches an inch.

Akysis vespertinus

A tiny, venomous stream catfish from Myanmar, rarely seen outside specialist collections.

Ophisternon gutturale

A secretive, air-breathing eel that hides in mud and comes alive after dark.

Aphanius sirhani

A critically endangered desert oasis killifish worth keeping as a conservation project.

Chrysiptera hemicyanea

A bold splash of blue and yellow that punches above its small size.

Lates calcarifer

A giant predator that outgrows almost every aquarium on earth.

Apolemichthys arcuatus

A boldly patterned Hawaiian angel that's surprisingly approachable for reef keepers.

Tilapia sparrmanii

A peaceful, plant-grazing tilapia that pairs up to raise its young.

Epiplatys fasciolatus

A surface-hunting West African killifish with metallic fins and a subtle barred pattern.

Bagarius rutilus

A river predator with vivid orange fins, built for serious hobbyists with serious space.

Hemichromis elongatus

A jewel cichlid with a reputation for being the most aggressive in the genus.

Gymnotus carapo

A electric-field-wielding oddball that can breathe air and recognize its neighbors

Dunckerocampus dactyliophorus

A boldly banded reef pipefish that breeds in captivity and hides in caves.

Naso annulatus

A genuinely massive unicornfish that schools on outer reef walls across the Indo-Pacific.

Pterapogon kauderni

A rare, naturally restricted cardinalfish with fascinating paternal mouthbrooding behavior.

Heniochus singularis

The largest bannerfish, solitary and rarely seen even in the wild.

Johnrandallia nigrirostris

A schooling butterflyfish that moonlights as a cleaner fish on Pacific reefs.

Rhinogobius giurinus ctenogobius giurinus ctenogobius hadropterus

A hardy little goby from Asia's rivers, surprisingly easy to keep.

Opsarius barna

A bold, fast-moving hill stream schooler that needs equally spirited tankmates.

Devario pathirana

A rare Sri Lankan danio with bold vertical bars and a lively, boisterous personality.

Amblyeleotris wheeleri

A hardy reef goby that shares its burrow with a nearly blind shrimp partner.

Taenioides cirratus

A snake-like burrowing goby with whiskery barbels and surprising air-breathing ability.

Cyclocheilichthys apogon

A schooling barb built for large, lively communities. No barbels, plenty of personality.

Stegastes leucostictus

A small, personable damselfish that tends its own algae garden on the reef floor.

Sicyopus zosterophorus

A tiny goby built for life on wet rocks in fast-flowing jungle streams.

Devario devario

A bold, wide-ranging danio that rewards keepers who give it room to school properly.

Neoarius berneyi

A wide-ranging Australian catfish that thrives in murky, slow-moving water.

Betta splendens

The world's most recognizable fighting fish, now bred in countless colors and fin shapes.

Rhaphiodon vulpinus

A sleek South American predator that outgrows almost every home aquarium.

Centropyge bicolor

A boldly two-toned dwarf angel that darts and hides across the reef.

Acestrorhynchus falcirostris

A riverine ambush predator that plays surprisingly well with tankmates it can't eat.

Cyprinodon pachycephalus

A rare Mexican pupfish with a notably broad head and a challenging side.

Naso vlamingii

A color-shifting open-water unicornfish that needs serious space to roam.

Copella callolepis

A tiny Amazonian schooler that rewards patience with vivid courtship displays.

Ostracion meleagris

A living mosaic of spots with a secret chemical defense you need to know about.