Species
Browsing 948 species. Use the filters below to narrow down.
Manduba, Slopehead Catfish
FishAgeneiosus inermis
A giant, predatory catfish with one of the most unusual reproductive strategies in freshwater.
Mantis Shrimp
InvertOdontodactylus havanensis
A Brazilian Atlantic crustacean that brings serious predator energy to the right tank.
Many-spined Cowfish
FishLactoria diaphana
A boxy, horned oddity that roams reefs and mudflats across the entire Indo-Pacific.
Marbled Climbing Perch
FishCtenopoma weeksii
A cryptic Congo predator that vanishes into leaf litter before your eyes.
Marbled Goby
FishOxyeleotris marmorata
A motionless giant that eats anything fitting in its enormous mouth.
Marbled Goby
FishPomatoschistus marmoratus
A cryptic little sand-dweller from Europe's coasts, full of quiet personality.
Marbled Hatchetfish
FishCarnegiella strigata
A deep-keeled surface dweller that brings life to the upper third of any tank.
Marbled Lungfish
FishProtopterus aethiopicus aethiopicus
An ancient African lungfish that breathes air and can outlast a drought.
Marbled Lyretail
FishFundulopanchax marmoratus
A rare Cameroonian killifish with detailed marbled patterning and a preference for cool water.
Marine Betta
FishCalloplesiops altivelis
A cave-dwelling mimic that fools predators by impersonating a moray eel.
Masked Puffer
FishArothron diadematus
A bold Red Sea puffer with a dramatic masked face and serious bite.
Masken Apisto
FishApistogramma paulmuelleri
A tiny Peruvian dwarf cichlid with outsized color and surprisingly bold personality.
Maulbrüter Apisto
FishApistogramma barlowi
The only Apistogramma that mouthbroods. Or doesn't, depending on its mood.
Mbu Puffer
FishTetraodon mbu
A Congo giant that demands respect, space, and a very sturdy tank.
Mccosker's Flasher
FishParacheilinus mccoskeri
A tiny reef wrasse where the males put on a color show like no other.
Mcculloch's Anemonefish
FishAmphiprion mccullochi
A rare island endemic with a bold personality that punches well above its size.
Media Luna Pupfish
FishCualac tessellatus
A rare Mexican pupfish with a conservation story worth getting behind.
Mediterranean Fried Egg Jellyfish
InvertCotylorhiza tuberculata
The Mediterranean jellyfish that looks exactly like a fried egg.
Mediterranean Killifish
FishAphanius fasciatus
A rare Mediterranean killifish that rewards dedicated keepers with fascinating, constant activity.
Meklong Spiny Eel
FishMacrognathus meklongensis
A secretive Thai spiny eel that comes out of hiding when hunger calls.
Mekong Croaking Gourami
FishTrichopsis schalleri
The tiny gourami that actually produces sounds to resolve conflicts and court mates.
Mekong Freshwater Stingray
FishDasyatis laosensis
A true river stingray from the Mekong, built for life on sandy bottoms.
Mekong Puffer
FishTetraodon suvattii
A bottom-hugging Mekong puffer that buries itself in river mud.
Mekong Ricefish
FishOryzias mekongensis
A tiny Mekong native with vivid fin markings and surprisingly easy breeding habits.
Mekong Tiger Perch
FishDatnioides undecimradiatus
A boldly barred Mekong predator with a long memory and a short temper.
Mendezi Dwarf Cichlid
FishApistogramma mendezi
A blackwater dwarf cichlid with a surprisingly gentle nature and fascinating cave-breeding habits.
Merry Widow
FishPhallichthys amates
A low-key Central American livebearer that thrives where flashier fish struggle.
Meteor Basslet
FishLiopropoma susumi
A secretive reef cave-dweller with bold pinstripes and peaceful manners.
Mexican Barnacle Blenny
FishAcanthemblemaria macrospilus
A pint-sized reef blenny that claims abandoned barnacle shells as its castle.
Milkspotted Puffer
FishChelonodon patoca
A schooling puffer from mangrove estuaries that gets surprisingly large.
Mini Chocolate Gourami
FishParasphaerichthys lineatus
A tiny Burmese labyrinth fish with some of the most unpredictable breeding behavior in the hobby.
Mini-piranha
FishSerrasalmus sanchezi
A misidentified mini-piranha relative with razor teeth and a fiery red throat.
Mirror Basslet
FishPseudanthias pleurotaenia
A rare, large anthias that demands respect, and space, in the reef tank.
Mokele-mbembe Bichir
FishPolypterus mokelembembe
An ancient, armored predator from the Congo's murky depths.
Monkey Bay Cichlid
FishAlticorpus mentale
A deep-water Malawi cichlid from sandy depths rarely seen in the hobby.
Moon Jellyfish
InvertAurelia aurita
striking open-water drifter that needs its own specialized kreisel tank.