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Species

Browsing 786 species. Use the filters below to narrow down.

Multicolor angelfish

Multicolor angelfish

Fish

Centropyge multicolor

A deep-reef dweller with bold coloring that rarely makes it to store shelves.

Multicolour Dottyback

Multicolour Dottyback

Fish

Ogilbyina novaehollandiae

A vivid reef dweller from the Great Barrier Reef with a bold dual-tone look.

Mystic Mystus

Mystic Mystus

Fish

Mystus mysticetus

A gregarious Southeast Asian catfish with a uniquely lateral-eyed look.

Naked Characin

Naked Characin

Fish

Gymnocharacinus bergi

A scaleless South American oddity from one of the world's most isolated streams.

necklace nassa

necklace nassa

Invert

Nassarius distortus

A tidy little scavenger from the Yaeyama Islands with a distinctively ornate shell.

Neon Blue Rasbora

Neon Blue Rasbora

Fish

Sundadanio axelrodi

Tiny blackwater gem that rewards patient keepers with dazzling group behavior.

Neon Dwarf Rainbowfish

Neon Dwarf Rainbowfish

Fish

Melanotaenia praecox

Tiny rainbowfish that turns up the color when kept in a proper shoal.

Network Cory

Network Cory

Fish

Corydoras reticulatus

A fine-patterned bottom dweller that lives surprisingly long in good company.

Niger Triggerfish

Niger Triggerfish

Fish

Odonus niger

Red teeth, blue body, and a personality that commands the whole tank.

Night Aulonocara

Night Aulonocara

Fish

Aulonocara hueseri

A sand-sifting peacock cichlid with deep blue coloration from Lake Malawi's rocky shores.

Nijssen's cory

Nijssen's cory

Fish

Corydoras nijsseni

A rare Rio Negro cory with bold patterning and a surprisingly long lifespan.

Norman's Lampeye

Norman's Lampeye

Fish

Poropanchax normani

Tiny West African killifish with glowing blue eyes that shimmer in low light.

Northern longsnose cory

Northern longsnose cory

Fish

Corydoras septentrionalis

A long-lived Orinoco bottom-dweller that breathes air and blinks at you.

Northern Purplespotted Gudgeon

Northern Purplespotted Gudgeon

Fish

Mogurnda mogurnda

A bold Australian bottom-dweller with real personality and surprising breeding behavior.

Northern Rainbowfish

Northern Rainbowfish

Fish

Melanotaenia affinis

One of the first rainbowfish in the hobby, now available in several wild forms.

Oaxaca Cichlid

Oaxaca Cichlid

Fish

Vieja zonata

A rare Mexican cichlid with big personality and even bigger space requirements.

Obliquidens Hap

Obliquidens Hap

Fish

Haplochromis obliquidens

A scrappy Victorian cichlid with a taste for algae and a bold personality.

Ocellated Wrasse

Ocellated Wrasse

Fish

Halichoeres melasmapomus

A bold cheek-spotted wrasse with a wide Pacific range and big personality.

Ogre Catfish

Ogre Catfish

Fish

Asterophysus batrachus

A gulper catfish that can swallow prey nearly twice its own size.

Olga

Olga

Fish

Corydoras simulatus

A rarely documented Colombian cory with a color pattern that keeps even experts guessing.

Olive danio

Olive danio

Fish

Danio dangila

A large, active danio with impressively long barbels and a rarely seen wild side.

Oneline Tetra

Oneline Tetra

Fish

Nannaethiops unitaeniatus

A peaceful little African schooler that deserves far more attention than it gets.

Oranda Goldfish

Oranda Goldfish

Fish

Carassius auratus var. oranda

The velvet-capped fancy goldfish that rewards patient, attentive keeping.

Orangefin Anemonefish

Orangefin Anemonefish

Fish

Amphiprion chrysopterus

A large, bold anemonefish from the wide Pacific with serious territorial attitude.

Orangefin Tetra

Orangefin Tetra

Fish

Bryconops affinis

A restless, fast-moving shoaler from the Guiana Shield's coastal streams.

Orangestriped Triggerfish

Orangestriped Triggerfish

Fish

Balistapus undulatus

One of the reef's most aggressive personalities packed into a boldly patterned body.

Orinoco Eartheater

Orinoco Eartheater

Fish

Biotodoma wavrini

A slender eartheater that thrives in groups and rewards patient, experienced keepers.

Orinoco Tetra

Orinoco Tetra

Fish

Hemigrammus barrigonae

A rare Orinoco tetra that rewards patient keepers willing to seek it out.

Ornate Corydoras

Ornate Corydoras

Fish

Corydoras ornatus

A long-lived Tapajós bottom-dweller that thrives in sociable, peaceful groups.

Oscar

Oscar

Fish

Astronotus ocellatus

The cichlid that recognizes your face and rearranges its own tank.

Otocinclus Catfish (Tank-Bred)

Otocinclus Catfish (Tank-Bred)

Fish

Otocinclus macrospilus

The most commonly sold oto, fragile at first but rewarding once settled.

Oyapock Cory

Oyapock Cory

Fish

Corydoras condiscipulus

A long-lived Oyapock armored catfish that breathes air and blinks its eyes.

Pacific Double-saddle Butterflyfish

Pacific Double-saddle Butterflyfish

Fish

Chaetodon ulietensis

A boldly patterned butterflyfish that pairs for life in the wild.

Palauan Riffle Goby

Palauan Riffle Goby

Fish

Stiphodon pelewensis

A tiny riffle-dweller that vanishes into the sand when startled.

Palespotted Corydoras

Palespotted Corydoras

Fish

Corydoras gossei

A long-lived, peaceful bottom dweller that breathes air and blinks its eyes.

Panamanian Eartheater

Panamanian Eartheater

Fish

Geophagus crassilabris

A rare Panamanian cichlid with a reddish glow and fascinating sand-sifting habits.