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Species

Browsing 1,903 species. Use the filters below to narrow down.

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 Leaffish

Malayan Leaffish

Fish

Pristolepis fasciata

A bold, deep-bodied predator from Southeast Asian floodplains with real personality.

Malayan Loach

Malayan Loach

Fish

Pangio semicincta

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

Malaya Shrimp

Malaya Shrimp

Invert

Caridina babaulti

A hardy, color-shifting dwarf shrimp that surprises you with every molt.

Malay glass catfish

Malay glass catfish

Fish

Ompok eugeneiatus

A shy, schooling catfish from Southeast Asian peat swamps and flooded forests.

Malaysian Trumpet Snail

Malaysian Trumpet Snail

Invert

Melanoides tuberculata

The tireless substrate burrower that aerates your gravel while you sleep.

Mandor

Mandor

Fish

Betta mandor

A small, secretive Bornean mouthbrooder best kept in quiet, species-focused setups.

Manduba, Slopehead Catfish

Manduba, Slopehead Catfish

Fish

Ageneiosus inermis

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

Mantis Shrimp

Mantis Shrimp

Invert

Odontodactylus havanensis

A Brazilian Atlantic crustacean that brings serious predator energy to the right tank.

Many Barred Distichodus

Many Barred Distichodus

Fish

Distichodus fasciolatus

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

Marakely

Marakely

Fish

Paratilapia polleni

Madagascar's endangered black cichlid, bold in personality and beautiful in the biotope

Marbled Climbing Perch

Marbled Climbing Perch

Fish

Ctenopoma weeksii

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

Marbled Crayfish

Marbled Crayfish

Invert

Procambarus virginalis

The only known parthenogenetic crayfish. Every individual is female and a perfect clone.

Marbled Crayfish

Marbled Crayfish

Invert

Cherax peknyi

A bold Australian freshwater crayfish with personality to spare.

Marbled Goby

Marbled Goby

Fish

Oxyeleotris marmorata

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

Marbled Hatchetfish

Marbled Hatchetfish

Fish

Carnegiella strigata

A deep-keeled surface dweller that brings life to the upper third of any tank.

Marbled Lungfish

Marbled Lungfish

Fish

Protopterus aethiopicus aethiopicus

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

Marbled Lyretail

Marbled Lyretail

Fish

Fundulopanchax marmoratus

A rare Cameroonian killifish with detailed marbled patterning and a preference for cool water.

Marbled Synodontis

Marbled Synodontis

Fish

Synodontis schoutedeni

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

Marimo Moss Ball

Marimo Moss Ball

Plant

Aegagropila linnaei

The algae ball that's actually welcome in your tank.

Mario's cory

Mario's cory

Fish

Corydoras pinheiroi

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

Masked Julie

Masked Julie

Fish

Julidochromis transcriptus

A bold little rock-dweller from Lake Tanganyika with sharp black-and-white contrast.

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.

Mayan Cichlid

Mayan Cichlid

Fish

Cichlasoma urophthalmus

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

Maya Tetra

Maya Tetra

Fish

Hyphessobrycon compressus

The founding species of its entire genus, rarely seen in the hobby.

Mbu Puffer

Mbu Puffer

Fish

Tetraodon mbu

A Congo giant that demands respect, space, and a very sturdy tank.

Media Luna Pupfish

Media Luna Pupfish

Fish

Cualac tessellatus

A rare Mexican pupfish with a conservation story worth getting behind.

Mediterranean Killifish

Mediterranean Killifish

Fish

Aphanius fasciatus

A rare Mediterranean killifish that rewards dedicated keepers with fascinating, constant activity.

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 Croaking Gourami

Mekong Croaking Gourami

Fish

Trichopsis schalleri

The tiny gourami that actually produces sounds to resolve conflicts and court mates.

Mekong Freshwater Stingray

Mekong Freshwater Stingray

Fish

Dasyatis laosensis

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