Species

Pethia nigripinnis

A cool-water gem from India's Western Ghats, rarely seen outside specialist collections.

Apteronotus albifrons

A velvety black, ribbon-finned predator that navigates by its own electric field.

Pervagor melanocephalus

A secretive reef filefish that pairs up and lurks among coral-rich ledges.

Betta siamorientalis

A tiny bubble-nesting betta with a blackish body and vivid red fin details.

Pangio oblonga

A slender, uniformly dark loach that loves company and hides in plain sight.

Ambastaia nigrolineata

A rare, sociable loach with bold racing stripes and fascinating group behaviors.

Thayeria boehlkei

The tetra that swims nose-up and wears a bold racing stripe to its tail.

Balitoropsis zollingeri

A flat-bodied stream crawler that hops and clings across rocks like no other loach.

Carassius auratus var. blackmoor

The velvety, telescope-eyed goldfish that turns heads in any pond or tank.

Macropodus spechti

A close paradise fish relative that thrives where others struggle.

Tylomelania zemis

A slow-moving, long-lived snail that grazes peacefully and breeds one giant baby at a time.

Pethia nigrofasciata

A peaceful Sri Lankan barb whose males blush deep crimson when rivals are near.

Pygocentrus cariba

The Orinoco's apex predator, wrapped in myth and surprisingly manageable alone.

Ostracion cubicus

Adorable cube-shaped reef fish that hides a dangerous chemical defense.

Auchenoglanis biscutatus

A giant, gentle African catfish that cruises the bottom with calm authority.

Hemibagrus wyckii

A river giant that sees humans as a threat. And acts on it.

Geophagus brachybranchus

A sand-sifting eartheater with elaborate mouthbrooding parental care and a surprisingly gentle nature.

Corydoras acutus

A sharp-snouted little armored catfish with a bold black dorsal spot.

Carnegiella marthae

A tiny, deep-chested surface dweller that will absolutely find any gap in your lid.

Hyphessobrycon socolofi

The bleeding heart tetra rewards patient keepers with spectacular male rivalry displays.

Nemacheilus troglocataractus

A blind, cave-dwelling loach from a single Thai cave system.

Schistura jarutanini

A blind cave loach from Thailand that science knows from just 22 specimens.

Andinoacara pulcher

A forgiving cichlid with real personality, perfect for community tanks with medium-sized fish.

Pseudomugil cyanodorsalis

A tiny blue-backed rainbowfish relative from Australia's brackish mangrove creeks.

Pygoplites diacanthus

One of the reef's most recognizable angels, and one of its trickiest to keep.

Procambarus alleni

Florida's boldest crustacean, in an almost unreal shade of blue.

Danio kerri

A powder-blue schooling gem from the Malay Peninsula that's rarely seen but easy to keep.

Chrysiptera cyanea

Vivid blue and boldly territorial, this tiny fish punches well above its weight.

Amblydoras nauticus

A hardy little catfish that talks in the dark and rarely shows its face by day.

Nothobranchius rachovii

A fish that lives fast, dies young, and leaves spectacular eggs behind.

Paracheilinus cyaneus

A reef-dwelling wrasse that sleeps wrapped in its own slime cocoon every night.

Thalassoma amblycephalum

A reef-dwelling wrasse with bold color phases and a peaceful community nature.

Parupeneus cyclostomus

A reef-flat hunter that uses whisker-like barbels to sniff out hidden prey.

Clibanarius tricolor

A tiny, tireless reef cleaner with vivid blue legs and a big appetite for algae.

Linckia laevigata

A vivid blue star from Indo-Pacific reefs, built for the patient reef keeper.

Trigonopoma gracile

A delicate blackwater rasbora with variable color forms from Borneo's forest streams.