Species
Browsing 574 species. Use the filters below to narrow down.
Licorice Gourami
FishParosphromenus sp. "Sentang"
A tiny peat-swamp gem that spawns head-down in secret caves
Licorice Gourami
FishParosphromenus tweediei
A tiny blackwater gem that's been hiding under the wrong name for decades.
Lifalili Cichlid
FishHemichromis lifalili
A jewel cichlid that transforms into something else entirely when spawning season hits.
Limespot Butterflyfish
FishChaetodon unimaculatus
A wide-ranging reef butterfly with a bold spot and a coral-eating habit.
Line Butterflyfish
FishChaetodon lineolatus
The largest butterflyfish in the world, with a bold graphic pattern to match.
Lined Seahorse
FishHippocampus erectus
A striking Atlantic seahorse with real personality, but not a beginner's fish.
Lionfish
FishPterois volitans
A venomous reef predator that rules its corner of the tank with quiet authority.
Longfin Betta
FishBetta enisae
A mouthbrooding wild betta from Borneo's leaf-littered forest streams.
Long-finned Characin
FishBrycinus longipinnis
A lively West African schooler that needs space and confident tankmates.
Longnose Butterflyfish
FishForcipiger flavissimus
A needle-nosed reef hunter that picks prey from crevices other fish can't reach.
Longsnouted Pipefish
FishDoryichthys martensii
A slender, pipe-bodied hunter that lets the male handle all the parenting duties.
Longspine Cardinal
FishZoramia leptacantha
A tiny reef cardinalfish that gathers in shimmering clouds above branching coral.
Longspine seahorse
FishHippocampus histrix
A thorny Indo-Pacific seahorse with dramatic spines and a delicate nature.
Loreto Tetra
FishHyphessobrycon loretoensis
A tiny Peruvian tetra with a vivid red tail that shines in a well-planted school.
Lubbock's Wrasse
FishCirrhilabrus lubbocki
A social, zooplankton-hunting wrasse that thrives in lively reef communities.
Lyretail Angelfish
FishGenicanthus caudovittatus
A rare peaceful angelfish with dramatic lyre-shaped tail fins and true sexual dimorphism.
Lyretail anthias
FishPseudanthias squamipinnis
Schooling reef anthias that shifts from female orange to vivid male purple.
Magenta Dottyback
FishPictichromis porphyrea
A bold little reef fish that punches well above its weight in personality.
Mahachai Betta
FishBetta mahachaiensis
A nipa palm specialist from coastal Thailand with iridescent blue-green armor.
Malabar Baril
FishBarilius bakeri
A fast, bold stream fish that needs equally confident tankmates to thrive.
Malawi Hawk Cichlid
FishAristochromis christyi
Lake Malawi's sneaky ambush predator that rolls sideways to fool its prey.
Mandor
FishBetta mandor
A small, secretive Bornean mouthbrooder best kept in quiet, species-focused setups.
Marbled Climbing Perch
FishCtenopoma weeksii
A cryptic Congo predator that vanishes into leaf litter before your eyes.
Marine Betta
FishCalloplesiops altivelis
A cave-dwelling mimic that fools predators by impersonating a moray eel.
Masked Angelfish
FishGenicanthus personatus
A rare Hawaiian endemic that's one of the most coveted angels in the hobby.
Maya Tetra
FishHyphessobrycon compressus
The founding species of its entire genus, rarely seen in the hobby.
Mediterranean Killifish
FishAphanius fasciatus
A rare Mediterranean killifish that rewards dedicated keepers with fascinating, constant activity.
Mekong Croaking Gourami
FishTrichopsis schalleri
The tiny gourami that actually produces sounds to resolve conflicts and court mates.
Mekong Giant Salmon Carp
FishAaptosyax grypus
A rare, river-running predator from the Mekong that grows to epic proportions.
Merry Widow
FishPhallichthys amates
A low-key Central American livebearer that thrives where flashier fish struggle.
Merten's Butterflyfish
FishChaetodon mertensii
A reef-associated butterflyfish that pairs up and patrols the deeper reef edges.
Meta Tetra
FishHyphessobrycon metae
A tricky-to-identify Orinoco tetra that rewards patient, well-planned community tanks.
Mexican tetra
FishAstyanax mexicanus
The cave fish that lost its eyes and gained extraordinary senses.
Minor Tetra
FishHyphessobrycon minor
A peaceful little tetra from Guyana that's seldom seen in the hobby.
Mirror Basslet
FishPseudanthias pleurotaenia
A rare, large anthias that demands respect, and space, in the reef tank.
Molly
FishPoecilia sphenops
A livebearer classic that can thrive from freshwater all the way to full marine conditions.