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Species

Browsing 698 species. Use the filters below to narrow down.

Marbled Climbing Perch

Marbled Climbing Perch

Fish

Ctenopoma weeksii

A cryptic Congo predator that vanishes into leaf litter before your eyes.

Marbled Goby

Marbled Goby

Fish

Oxyeleotris marmorata

A motionless giant that eats anything fitting in its enormous mouth.

Marbled Synodontis

Marbled Synodontis

Fish

Synodontis schoutedeni

A beginner-friendly Congo catfish with bold marbled patterning that deepens with age.

Maroon Clownfish

Maroon Clownfish

Fish

Amphiprion tricinctus

Three bold white bars on deep orange. The Marshall Islands' own anemonefish.

Maroon Clownfish

Maroon Clownfish

Fish

Premnas biaculeatus

The boldest clownfish in the hobby, and it knows it.

Masken Apisto

Masken Apisto

Fish

Apistogramma paulmuelleri

A tiny Peruvian dwarf cichlid with outsized color and surprisingly bold personality.

Maulbrüter Apisto

Maulbrüter Apisto

Fish

Apistogramma barlowi

The only Apistogramma that mouthbroods. Or doesn't, depending on its mood.

MEGA Orange Dwarf Cichlid (Apistogramma cacatuoide) - Tank Bred

MEGA Orange Dwarf Cichlid (Apistogramma cacatuoide) - Tank Bred

Fish

Apistogramma cacatuoide

A selectively bred cockatoo cichlid dripping in vivid orange from dorsal to tail.

Mekong Bumblebee Goby

Mekong Bumblebee Goby

Fish

Brachygobius mekongensis

A pint-sized brackish goby with bold banded markings and a big personality.

Mekong Puffer

Mekong Puffer

Fish

Tetraodon suvattii

A bottom-hugging Mekong puffer that buries itself in river mud.

Mexican Barnacle Blenny

Mexican Barnacle Blenny

Fish

Acanthemblemaria macrospilus

A pint-sized reef blenny that claims abandoned barnacle shells as its castle.

Mexican Tetra

Mexican Tetra

Fish

Astyanax fasciatus

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

Midas Blenny

Midas Blenny

Fish

Ecsenius midas

A reef blenny that mimics anthias in color, movement, and social behavior.

Milkspotted Puffer

Milkspotted Puffer

Fish

Chelonodon patoca

A schooling puffer from mangrove estuaries that gets surprisingly large.

Mimic Surgeonfish

Mimic Surgeonfish

Fish

Acanthurus pyroferus

A juvenile master of disguise that grows into a bold reef grazer.

Minkley's Cichlid

Minkley's Cichlid

Fish

Herichthys minckleyi

A rare Mexican cichlid from one of the world's most extraordinary desert springs.

Mokele-mbembe Bichir

Mokele-mbembe Bichir

Fish

Polypterus mokelembembe

An ancient, armored predator from the Congo's murky depths.

Molly Miller

Molly Miller

Fish

Scartella cristata

A tidepool blenny with a wild mohawk and an appetite for algae.

Monkey Bay Cichlid

Monkey Bay Cichlid

Fish

Alticorpus mentale

A deep-water Malawi cichlid from sandy depths rarely seen in the hobby.

Montecristo Cichlid

Montecristo Cichlid

Fish

Vieja heterospila

A robust Central American cichlid from some of Mexico's most storied river systems.

Moonspot Licorice Gourami

Moonspot Licorice Gourami

Fish

Parosphromenus linkei

A pint-sized blackwater gourami with head-down courtship displays unlike any other.

Moustache Catfish

Moustache Catfish

Fish

Auchenipterus nuchalis

A surface-roaming catfish with bizarre ossified barbels and secretive nocturnal habits.

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Moustache Jawfish

Fish

Opistognathus lonchurus

A bold little burrower with a face full of personality.

Multibar Angelfish

Multibar Angelfish

Fish

Centropyge multifasciata

A deep-dwelling pygmy angel that rarely makes it into the hobby.

Multicolor angelfish

Multicolor angelfish

Fish

Centropyge multicolor

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

Multifasciatus

Multifasciatus

Fish

Neolamprologus multifasciatus

Possibly the world's smallest cichlid, big attitude packed into a tiny shell.

Mystery Wrasse

Mystery Wrasse

Fish

Pseudocheilinus ocellatus

A secretive reef wrasse with bold colors and a talent for disappearing.

Mystic Mystus

Mystic Mystus

Fish

Mystus mysticetus

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

Namak

Namak

Fish

Aphanius arakensis

A rare Iranian killifish relative worth keeping for conservation as much as curiosity.

Nemacheilus guentheri

Nemacheilus guentheri

Fish

Mesonoemacheilus guentheri

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

Neon Dottyback

Neon Dottyback

Fish

Pseudochromis aldabraensis

A bold little reef dweller that punches well above its weight in personality.

Neon Highfin Barb

Neon Highfin Barb

Fish

Oreichthys crenuchoides

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

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.

Nile Bichir

Nile Bichir

Fish

Polypterus bichir

A living fossil that breathes air and moves like an eel.

Nile squeaker

Nile squeaker

Fish

Synodontis schall

The unpredictable bruiser of the Synodontis world, not for community tanks.