Species

Melanotaenia fluviatilis

Australia's most cold-tolerant rainbowfish, built for temperate rivers and cool winters.

Ophisternon gutturale

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

Chilatherina axelrodi

A rare Papua New Guinean gem found in just one stream on Earth.

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.

Balantiocheilos melanopterus

A shoaling fish that outgrows most home aquariums faster than owners expect.

Lates calcarifer

A giant predator that outgrows almost every aquarium on earth.

Poecilia maylandi

A little-known Mexican molly with big personality and a taste for algae.

Bujurquina vittata

A devoted South American cichlid that carries its babies in its mouth.

Apolemichthys arcuatus

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

Toxotes jaculatrix

The fish that hunts above water, shooting insects down with pinpoint accuracy.

Platystacus cotylephorus

A leaf-mimicking catfish that carries its eggs on fleshy belly stalks.

Tilapia sparrmanii

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

Chaetodon striatus

A Caribbean reef classic that moonlights as a cleaning station attendant.

Microctenopoma fasciolatum

A small Congo predator that rewards patient keepers with fascinating labyrinth fish behavior.

Apistogramma bitaeniata

A jewel of Amazonian blackwater, with color forms varying by river system.

Epiplatys fasciolatus

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

Amblygobius phalaena

A sand-sifting goby that doubles as a natural substrate vacuum cleaner.

Bagarius rutilus

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

Colisa fasciata

A labyrinth fish with bold bands and a surprisingly peaceful personality.

Opistognathus macrognathus

A burrow-digging Atlantic oddity that broods its eggs in its mouth.

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

Leporinus fasciatus

Bold black-and-yellow stripes that multiply as the fish grows up.

Schistura notostigma

A feisty Sri Lankan stream dweller that climbs waterfalls and holds its ground.

Dunckerocampus dactyliophorus

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

Colomesus psittacus

A peaceful Atlantic puffer that genuinely tolerates company of its own kind.

Pyrrhulina vittata

A pocket-sized Amazonian predator with big personality and delicate looks.

Melanotaenia trifasciata

A dazzling Australian native whose true colors take patience to reveal.

Metynnis hypsauchen fasciatus

A silver dollar relative with bold barring that makes it stand out in the group.

Mastacembelus circumcinctus

A secretive burrowing eel that vanishes into the substrate for days at a time.

Syncrossus helodes

A bold, large loach that needs space, company, and an owner who means business.

Canthigaster valentini

A pint-sized puffer so bold that other fish evolved just to copy it.

Naso annulatus

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

Guianacara geayi

A harem-keeping cichlid from French Guiana's rocky, fast-running streams.

Corydoras metae

The bandit-masked cory with a longer lifespan than most fishkeepers expect.