Species

Heterotis niloticus

The oddball arowana that filters plankton instead of hunting prey.

Anomalochromis thomasi

A shy, peaceable little cichlid that rewards patient keepers with devoted parenting.

Pantodon buchholzi

A living leaf on the water's surface, until something edible flies past.

Acreichthys tomentosus

A seagrass-dwelling filefish that earns its keep hunting small invertebrates.

Colomesus asellus

The only true schooling puffer, and it comes from the Amazon.

Channa andrao

A dwarf snakehead small enough for a community tank, with fascinating parental behavior.

Pterois antennata

A venomous nocturnal predator draped in bold bars and elaborate fins.

Luciosoma pellegrinii

A surface-prowling Bornean predator that leaps for food above the waterline.

Aphanius baeticus

A critically rare Spanish killifish that rewards dedicated keepers willing to help conserve it.

Aphanius saourensis

A critically endangered Algerian killifish best kept as a conservation breeding project.

Paracirrhites arcatus

A bold perching predator that rules its corner of the reef with attitude.

Pao suvattii

A lurking ambush predator from the Mekong that barely moves until food arrives.

Xenentodon cancila

A torpedo-shaped freshwater predator that will absolutely bite the hand that feeds it.

Aulonocara auditor

A sand-sifting Lake Malawi cichlid from a tiny northern shoreline range.

Aulonocara korneliae

A rock-dweller that hunts the sand, endemic to one Malawian island.

Aphanius sirhani

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

Epiplatys fasciolatus

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

Colomesus psittacus

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

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.

Polypterus delhezi

A living fossil from the Congo that breathes air and hunts by smell.

Devario pathirana

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

Chelmon mulleri

A reef butterflyfish that prefers muddy estuaries over pristine coral gardens.

Pogonoperca punctata

A secretive reef ambush predator with a toxic secret beneath its skin.

Canthigaster bennetti

A pint-sized puffer with big personality and a surprisingly calm disposition.

Betta splendens

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

Polypterus bichir bichir

A living fossil that breathes air and hunts by smell alone.

Apistogramma norberti

A pocket-sized Peruvian cichlid with a big personality and cave-spawning habits.

Osteoglossum ferreirai

A surface-cruising river predator that leaps for prey in the wild.

Rhinecanthus verrucosus

A Picasso-patterned triggerfish that prefers retreat over confrontation.

Ostracion meleagris

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

Gramma melacara

A deep-reef beauty that swims upside-down along underwater cliff faces.

Arothron immaculatus

A wide-ranging Indo-Pacific puffer with estuarine roots and a no-nonsense attitude.

Paragobiodon lacunicolus

A tiny goby that spends its entire life tucked inside a single coral colony.

Apteronotus albifrons

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