Species

Cryptocentrus leptocephalus

A burrow-sharing goby that stands guard while its pistol shrimp partner digs.

Achirus lineatus

A master of disguise that buries itself until almost invisible.

Gymnothorax chilospilus

A compact reef moray with a bold spotted pattern and a surprisingly calm reputation.

Rhinogobius flumineus

A compact Japanese stream goby with devoted fathering instincts and beginner-friendly needs.

Homaloptera bilineata

A tiny torrent-dweller that crawls and hops across rocks like no other fish.

Homaloptera leonardi

A tiny hillstream crawler that clings to rocks and hops across the riverbed.

Homaloptera smithi

A fast-water hillstream loach that crawls and hops across rocks like a tiny lizard.

Homaloptera zollingeri

A flattened, rock-clinging stream dweller that crawls and hops like a lizard.

Homalopteroides smithi

A rock-clinging hill stream loach that crawls and hops like a tiny lizard.

Homalopterula gymnogaster

A tiny Sumatran hillstream loach that crawls and hops across rocks like a lizard.

Neohomaloptera johorensis

A tiny, orange hillstream loach that crawls and hops rather than swims.

Homaloptera parclitella

A flat-bodied Malay hillstream loach that crawls and hops across rocks like a tiny lizard.

Lepidocephalichthys irrorata

A rarely traded Indian loach with hidden spines and subtle charm.

Acantopsis octoactinotos

A slender, sand-diving loach with a distinctively elongated snout.

Lactoria cornuta

A boxy, horn-headed oddity that browses the seafloor with surprising curiosity.

Corydoras narcissus

A long-snouted cory from the Amazon, rarely seen and worth the search.

Corydoras semiaquilis

A peaceful bottom-dweller from Peru that thrives in sociable groups.

Sperata aor

A river giant with a shoveled snout that will outgrow almost any tank.

Mystus gulio

A schooling brackish catfish that grows surprisingly large and breathes air.

Corydoras loretoensis

A long-finned little bottom-dweller that thrives in lively, social groups.

Corydoras ortegai

A tiny armored catfish from Peru that breathes air and blinks at you.

A whiptail catfish with one of the most striking breeding behaviors in the hobby.

Apistogramma pantalone

A tiny Peruvian dwarf cichlid with courtship rituals unlike any other Apistogramma.

Acanthicus hystrix

A giant, armor-plated catfish that outgrows almost every home aquarium.

Acrochordonichthys septentrionalis

A skin-shedding hill stream catfish that keeps its tankmates on their toes.

Baryancistrus chrysolomus

A boldly finned Xingu catfish that earns its territorial reputation with age.

Puntius mahecola

A rarely traded Kerala barb best appreciated in a lively, same-species school.

Corydoras amandajanea

A rare armored catfish from the Negro River that occasionally breathes air

Cleidopus gloriamaris

A living lantern: the fish that carries its own lights on its jaw.

Barilius gatensis

A bold, fast-moving hill stream fish that needs equally assertive tankmates.

Synodontis njassae

Lake Malawi's only squeaker, built for cichlid tanks and rocky hideouts.

Abactochromis labrosus

A rock-dwelling Malawi cichlid with an unusually approachable temperament for the genus.

Pangio semicincta

The fish sold as kuhli loach is almost certainly this one instead.

Melanoides tuberculata

The tireless substrate burrower that aerates your gravel while you sleep.

Synchiropus splendidus

One of the most vividly colored fish on the reef, and one of the trickiest to keep.

Ageneiosus inermis

A giant, predatory catfish with one of the most unusual reproductive strategies in freshwater.