Species

Chrysaora quinquecirrha

A true open-water predator that demands a specialist setup and rewards patient keepers.

Betta persephone

A velvety black pygmy betta from some of the world's most acidic swamps.

Chelidonura varians

A velvety reef predator that hunts flatworms with surprising efficiency.

Betta macrostoma

A rare Bornean beauty that rewards patient, dedicated keepers.

Colossoma macropomum

The second-largest scaled fish in the Amazon, and it grows to match.

Stomolophus meleagris

A true open-water drifter that demands a very specialized setup to survive in captivity.

Myxocyprinus asiaticus

A dramatic juvenile that grows into a massive, migratory river fish almost nobody is prepared for.

Echidna polyzona

A reef moray that hunts crabs, not fish, making it surprisingly tankmate-friendly.

Acanthurus dussumieri

A wide-ranging reef grazer that puts on a vivid color display when riled.

Catlocarpio siamensis

One of the world's largest freshwater fish, and a conservation concern in its native rivers.

Chrysaora pacifica

A striking open-water predator that demands a very specialized setup.

Hypselodoris bullocki

A jewel-toned sea slug that demands expert care and a peaceful tank.

Lactoria cornuta

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

Synchiropus splendidus

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

Pangasianodon gigas

One of the largest freshwater fish on Earth, and critically endangered.

Naso lituratus

A wide-ranging Pacific grazer that needs serious space to thrive.

Alveopora minuta

A tiny-polyped Alveopora that thrives where currents run strong.

Naso elegans

A bold reef grazer with vivid orange tail spines and a distinctly regal profile.

Chrysaora fuscescens

A striking open-water predator that demands a very specialized setup.

Montipora nodosa

A textured Indo-Pacific encrusting coral that demands serious reef-keeping experience.

Montipora saudii

A rarely kept Western Indian Ocean sheet coral with a distinctively textured surface.

Centropyge potteri

Hawaii's own pygmy angel, beautiful but notoriously tricky to settle in.

Mnemiopsis leidyi

A glowing, gelatinous predator that belongs in a very specialized setup.

Flabellina iodinea

A vivid Pacific nudibranch that's as demanding as it is decorative.

Acropora austera

A branching reef-builder that demands turbulent water and intense light to thrive.