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Species

Browsing 808 species. Use the filters below to narrow down.

Mexican Tetra

Mexican Tetra

Fish

Astyanax fasciatus

A bold, wide-ranging tetra with a predatory streak that surprises many keepers.

Micro Cory

Micro Cory

Fish

Corydoras hastatus

Tiny armored catfish that defies its family by cruising the midwater column.

Micro Glassfish

Micro Glassfish

Fish

Danionella translucida

One of the tiniest freshwater fish alive, and surprisingly easy to breed.

Midget Chromis

Midget Chromis

Fish

Chromis acares

A tiny schooling damsel that brings reef-like energy to modest-sized tanks.

Millennium Cory

Millennium Cory

Fish

Corydoras spectabilis

The 'millennium cory'. A peaceful schooler with spotted flair from Brazil's Guaporé basin.

Minor Tetra

Minor Tetra

Fish

Hyphessobrycon minor

A peaceful little tetra from Guyana that's seldom seen in the hobby.

Moorish Idol

Moorish Idol

Fish

Zanclus canescens

Iconic reef wanderer with a dramatic look that rarely thrives in captivity.

Mosaic Corydoras

Mosaic Corydoras

Fish

Corydoras haraldschultzi

A long-lived armored catfish with detailed reticulated markings and a surprisingly social personality.

Moth Catfish

Moth Catfish

Fish

Hara jerdoni

A moth-like micro catfish from Indian hill streams, best kept in groups.

Mottled Loach

Mottled Loach

Fish

Acanthocobitis botia

A peaceful, quirky bottom-dweller with a false eye that fools predators.

Mustard Tang

Mustard Tang

Fish

Acanthurus guttatus

A surge-zone schooler that thrives where the waves crash hardest.

Myanmar Redfin 2

Myanmar Redfin 2

Fish

Oreichthys sp. "Myanmar Redfin 2"

A tiny, feisty shoaler from Myanmar with a bold caudal blotch and plenty of personality.

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.

Nana Rasbora

Nana Rasbora

Fish

Microdevario nanus

Tiny Myanmar schooler with a bold dorsal-fin blotch and big personality in small packages.

Nemacheilus guentheri

Nemacheilus guentheri

Fish

Mesonoemacheilus guentheri

A pebble-stream loach from India with famously unpredictable mood swings.

Nemacheilus petrubanarescui

Nemacheilus petrubanarescui

Fish

Mesonoemacheilus petrubanarescui

A shy Indian stream loach best kept in groups to bring it out of hiding.

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.

Neon Goby

Neon Goby

Fish

Gobiosoma oceanops

A tiny reef cleaner that punches way above its weight.

Neon Highfin Barb

Neon Highfin Barb

Fish

Oreichthys crenuchoides

A tiny barb with a sail-like dorsal fin and surprisingly complex social dynamics.

Neon Tetra

Neon Tetra

Fish

Paracheirodon innesi

The fish that turned millions of people into aquarium keepers.

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.

Nijssen's cory

Nijssen's cory

Fish

Corydoras nijsseni

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

Nilgiri Danio

Nilgiri Danio

Fish

Devario neilgherriensis

A rarely seen Indian hill stream danio with iridescent blue and yellow flanks.

Northern longsnose cory

Northern longsnose cory

Fish

Corydoras septentrionalis

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

Northern Rainbowfish

Northern Rainbowfish

Fish

Melanotaenia affinis

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

Odessa Barb

Odessa Barb

Fish

Pethia padamya

A barb with a mysterious past and males that blaze red when rivals are near.

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.

One-lined Pencilfish

One-lined Pencilfish

Fish

Nannostomus unifasciatus

A tiny pencilfish that swims at a permanent angle, day and night.

Oneline Tetra

Oneline Tetra

Fish

Nannaethiops unitaeniatus

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

Opae Ula

Opae Ula

Invert

Halocaridina rubra

Tiny Hawaiian shrimp that thrives on neglect in brackish anchialine pools.

Opsarius ardens

Opsarius ardens

Fish

Barilius ardens

A fast-moving Western Ghats minnow that needs space, speed, and bold companions.

Opsarius malabaricus

Opsarius malabaricus

Fish

Barilius malabaricus

A fast, bold river minnow from India's Western Ghats that needs room to move.