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Species

Browsing 933 species. Use the filters below to narrow down.

Mailfish

Mailfish

Fish

Cleidopus gloriamaris

A living lantern: the fish that carries its own lights on its jaw.

Malabar Baril

Malabar Baril

Fish

Barilius gatensis

A bold, fast-moving hill stream fish that needs equally assertive tankmates.

Malawi Squeaker

Malawi Squeaker

Fish

Synodontis njassae

Lake Malawi's only squeaker, built for cichlid tanks and rocky hideouts.

Malawi Thick-lipped Cichlid

Malawi Thick-lipped Cichlid

Fish

Abactochromis labrosus

A rock-dwelling Malawi cichlid with an unusually approachable temperament for the genus.

Malayan Loach

Malayan Loach

Fish

Pangio semicincta

The fish sold as kuhli loach is almost certainly this one instead.

Mandarin Dragonet

Mandarin Dragonet

Fish

Synchiropus splendidus

One of the most vividly colored fish on the reef, and one of the trickiest to keep.

Manduba, Slopehead Catfish

Manduba, Slopehead Catfish

Fish

Ageneiosus inermis

A giant, predatory catfish with one of the most unusual reproductive strategies in freshwater.

Many Barred Distichodus

Many Barred Distichodus

Fish

Distichodus fasciolatus

A boldly barred Congo giant that stays surprisingly peaceful for its size.

Many-spined Cowfish

Many-spined Cowfish

Fish

Lactoria diaphana

A boxy, horned oddity that roams reefs and mudflats across the entire Indo-Pacific.

Marbled Goby

Marbled Goby

Fish

Oxyeleotris marmorata

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

Marbled Goby

Marbled Goby

Fish

Pomatoschistus marmoratus

A cryptic little sand-dweller from Europe's coasts, full of quiet personality.

Marbled Lungfish

Marbled Lungfish

Fish

Protopterus aethiopicus aethiopicus

An ancient African lungfish that breathes air and can outlast a drought.

Marbled Synodontis

Marbled Synodontis

Fish

Synodontis schoutedeni

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

Mario's cory

Mario's cory

Fish

Corydoras pinheiroi

A rare Amazonian cory that can breathe air and live for decades.

Maroon Clownfish

Maroon Clownfish

Fish

Premnas biaculeatus

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

Maulbrüter Apisto

Maulbrüter Apisto

Fish

Apistogramma barlowi

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

Mayan Cichlid

Mayan Cichlid

Fish

Cichlasoma urophthalmus

A brackish-tolerant bruiser that can handle conditions few other cichlids can.

Mccosker's Flasher

Mccosker's Flasher

Fish

Paracheilinus mccoskeri

A tiny reef wrasse where the males put on a color show like no other.

Mcculloch's Anemonefish

Mcculloch's Anemonefish

Fish

Amphiprion mccullochi

A rare island endemic with a bold personality that punches well above its size.

Medusa pleco

Medusa pleco

Fish

Ancistrus ranunculus

A flat-headed, rock-hugging pleco from Brazil's wild river rapids.

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.

Meklong Spiny Eel

Meklong Spiny Eel

Fish

Macrognathus meklongensis

A secretive Thai spiny eel that comes out of hiding when hunger calls.

Mekong Bumblebee Goby

Mekong Bumblebee Goby

Fish

Brachygobius mekongensis

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

Mekong Freshwater Stingray

Mekong Freshwater Stingray

Fish

Dasyatis laosensis

A true river stingray from the Mekong, built for life on sandy bottoms.

Mekong Giant Catfish

Mekong Giant Catfish

Fish

Pangasianodon gigas

One of the largest freshwater fish on Earth, and critically endangered.

Menezesi Cory

Menezesi Cory

Fish

Aspidoras menezesi

A tiny Brazilian catfish with a surprisingly long lifespan and a Corydoras personality.

Meteor Basslet

Meteor Basslet

Fish

Liopropoma susumi

A secretive reef cave-dweller with bold pinstripes and peaceful manners.

Mexican Barnacle Blenny

Mexican Barnacle Blenny

Fish

Acanthemblemaria macrospilus

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

Mexican Jawfish

Mexican Jawfish

Fish

Opistognathus mexicanus

A burrowing Mexican charmer that watches the world from its self-made home.

Micro Cory

Micro Cory

Fish

Corydoras hastatus

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

Millennium Cory

Millennium Cory

Fish

Corydoras spectabilis

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

Mini Chocolate Gourami

Mini Chocolate Gourami

Fish

Parasphaerichthys lineatus

A tiny Burmese labyrinth fish with some of the most unpredictable breeding behavior in the hobby.

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.

Moore's Lamprologus

Moore's Lamprologus

Fish

Variabilichromis moorii

A Lake Tanganyika rockdweller with a fascinating family life and devious brood tactics.