Species

Colossoma macropomum

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

Carassius auratus var. calico

A patchwork of orange, black, and white that only gets better with age.

Trimma cana

A reef-dwelling miniature goby that perches right on living coral.

Stomolophus meleagris

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

Hypseleotris compressa

An Australian goby with dazzling breeding colors and one of nature's tiniest vertebrate eggs.

Amblypharyngodon mola

A sleek South Asian cyprinid from rice paddies and slow canals, surprisingly adaptable in captivity.

Carassius auratus var. celestial

The upward-gazing fancy goldfish that trades agility for pure personality.

Danio margaritatus

Tiny, jewel-spotted fish that rewards patient keepers with spectacular color displays.

Oliotius oligolepis

A peaceful, easy-to-keep schooler with bold checker-patterned scales.

Rasbora rubrodorsalis

A tiny Southeast Asian schooler with a vivid red splash on its dorsal fin.

Centropyge argi

The Atlantic's tiniest angel, bold in color and personality despite its small size.

Barbodes everetti

A misidentified Bornean barb finally getting the recognition it deserves.

Carassius auratus var. comet

The classic long-tailed goldfish that outlives most aquarium pets.

Remora remora

The original hitchhiker: a fish that lives life permanently attached to a host.

Oxymonacanthus longirostris

A vividly spotted obligate coral feeder that's as delicate as it is beautiful.

Gobiodon atrangulatus

A tiny coral-dwelling goby that lives and breeds within Acropora colonies.

Serranocirrhitus latus

A secretive reef dweller that casually swims upside-down along cave ceilings.

Aequorea victoria

The bioluminescent Pacific jelly that inspired a Nobel Prize-winning discovery.

Cirrhilabrus bathyphilus

A rarely seen deep-reef wrasse from some of the Pacific's most remote atolls.

Xiphophorus cortezi

A gentle, lesser-known Mexican swordtail for the planted community tank.

Wetmorella albofasciata

A tiny, secretive reef wrasse that haunts caves and rarely ventures into the open.

Brachychalcinus orbicularis

A coin-shaped schooling tetra that holds its own in a lively community tank.

Trichogaster lalius

Brilliant colors, big personality quirks, and a health reputation worth knowing before you buy.

Melanotaenia splendida splendida

Australia's most variable rainbowfish, with color that takes a year to fully reveal itself.

Paracheilinus octotaenia

A Red Sea gem whose dazzling courtship displays have to be seen to be believed.

Betta smaragdina

A wild-caught relative of the common betta with iridescent emerald scales and surprising calm.

Chaetodon paucifasciatus

A Red Sea gem with bold chevron patterning and a loyal pair bond.

Carassius auratus var. fantail

The gateway fancy goldfish. Forgiving, long-lived, and shaped like a swimming egg.

Hemigrammus unilineatus

A peaceful shoaler from South America that rewards patient keepers with easy breeding.

Devario maetaengensis

A compact mountain-stream danio with bold patterning from northern Thailand's cool waters.

Cirrhilabrus jordani

Hawaii's most vivid wrasse, blazing red and orange across reef drop-offs.

Craterocephalus stercusmuscarum

A peaceful Australian native that rewards patient keepers with lively schooling behavior.

Hemigrammus pulcher

A peaceful, colorful little tetra that thrives in numbers and suits most community tanks.

Prionobrama filigera

A peaceful, transparent schooling fish with a blood-red tail that earns its name.

Charax gibbosus

A rarely-seen South American oddity with a see-through body and a quirky head-down posture.

Centropyge heraldi

A clean, all-yellow dwarf angel that's bolder than its simple look suggests.