The Americas

Pseudoplatystoma fasciatum

A river giant that outgrows almost every home aquarium faster than you'd expect.

Brachyplatystoma tigrinum

A boldly barred Amazonian predator that demands a truly massive tank.

Aguarunichthys tocantinsensis

A powerful Amazonian predator built for fast water and rocky riverbeds.

Hyphessobrycon stegemanni

A tiny Tocantins tetra often mistaken for its look-alike neighbor.

Uaru amphiacanthoides

A surprisingly gentle giant that raises fry just like discus do.

Atractosteus tropicus

A living fossil from Central America that grows to canoe-like proportions.

Cichla monoculus

A river predator built for size, speed, and a 20-year commitment.

Chalceus erythrurus

A bold, active surface cruiser with a brilliantly colored tail to match its attitude.

Farlowella mariaelenae

A living twig that grazes algae and barely moves. Until it does.

Farlowella vittata

A living twig that vanishes in plain sight among branches and leaves.

Vieja bifasciata

Two bold facial stripes mark this colorful, feisty Central American cichlid.

Nannostomus bifasciatus

A schooling pencilfish that tilts nose-up and swims in tight, lively groups.

Amaralia hypsiura

A flat, leaf-litter specialist with a peculiar silhouette and peaceful disposition.

Astyanax bimaculatus

A robust South American characin that rewards keepers willing to think big.

Nannostomus digrammus

A rare, peaceful pencilfish that doubles as the perfect dither fish for dwarf cichlid tanks.

Hemigrammus ulreyi

A peaceful schooling tetra that's rarer in tanks than its charm deserves.

Apistogramma borellii

A gentle, cold-tolerant dwarf cichlid with big personality in a small package.

Pyrrhulina laeta

A slender Amazonian predator that punches above its small size.

Hydrolycus armatus

A river predator with fangs to match its reputation, and size to back it up.

Leporacanthicus joselimai

Fanged river catfish with bold markings that fade into something more mysterious with age.

Xiphophorus variatus

Dozens of color forms, endless fry, and tolerant enough for any community tank.

Potamotrygon castexi

A disc-shaped river predator that can actually solve puzzles to get its food.

Apistogramma viejita

A rarely traded Colombian dwarf cichlid that's almost impossible to find true-to-name.

Corydoras virginiae

A long-lived armored catfish from Peru with a surprisingly personal quirk: it blinks.

Calophysus macropterus

The Vulture Catfish: a relentless scavenger built for South America's biggest rivers.

Corydoras weitzmani

A long-lived little catfish that blinks at you from the bottom of the tank.

Theraps wesseli

A little-known Honduran cichlid with big personality and bold Central American roots.

Rineloricaria lanceolata

A gentle whiptail catfish that breeds willingly and guards its eggs with dedication.

Rineloricaria fallax

A devoted catfish father that breeds readily and tolerates a wide range of tankmates.

Rineloricaria parva

A slender, whip-tailed catfish that breeds readily and suits most peaceful communities.

Vieja argentea

A boldly colored Central American bruiser that rewards patient, experienced keepers.

Pimelodus albofasciatus

A sleek, fast-moving pimelodid catfish built for big river life.

Allodontichthys hubbsi

A rare Mexican livebearer from a single river system, seldom seen in the hobby.

Axelrodia stigmatias

A tiny Amazonian shoaler that rewards patient keepers with lively social behavior.

Corydoras albolineatus

A white-striped Bolivian cory that occasionally gulps air at the surface.

Hemiodus atranalis

A lively, peaceful schooling fish built for spacious Amazon biotopes.