Species
Browsing 1,508 species. Use the filters below to narrow down.
Shovel-nosed Catfish
FishSorubim lima
A head-down ambush predator that swims like a falling leaf among the roots.
Siamese Algae Eater
FishCrossocheilus oblongus
The algae eater that actually eats algae, including the tough stuff other fish ignore.
Siamese Badis
FishBadis siamensis
A rare Thai cave-spawner with detailed patterning and fascinating paternal instincts.
Siamese Flying Fox
FishCrossocheilus siamensis
A tireless algae grazer that earns its keep in planted tanks.
Silver Barbel
FishPareutropius longifilis
A shy but lively African schooling fish that thrives in numbers
Silver Dollar
FishMetynnis argenteus
Peaceful piranha relatives that will demolish your plants overnight.
Silver Hatchetfish
FishGasteropelecus sternicla
A surface-skimming acrobat that leaps to catch insects mid-air.
Silver Mylossoma
FishMylossoma duriventre
A deep-bodied South American schooler that belongs in serious, large setups.
Silver Rasbora
FishRasbora argyrotaenia
A sleek, fast-moving schooler built for larger river setups
Silver Tetra
FishGymnocorymbus bondi
A peaceful Orinoco schooler that's more interesting than its plain adult looks suggest.
Silver Tiger Fish
FishDatnioides polota
A bold, bar-patterned predator that bridges freshwater rivers and brackish coastal zones.
Silver-tipped Tetra
FishHasemania nana
A glittering, lively little tetra that plays well with almost everyone.
Six-banded Distichodus
FishDistichodus sexfasciatus
A boldly striped river giant that outgrows most aquariums and most owners' expectations.
Sixbar Panchax
FishEpiplatys sexfasciatus sexfasciatus
A sleek African killifish that hunts from the surface with cool precision.
Six-line Wrasse
FishPseudocheilinus hexataenia
A bold, reef-safe hunter that punches well above its size in attitude.
Six-ray Star Coral
CoralMadracis senaria
A deep-water Caribbean encrusting coral with a precise, six-pointed corallite architecture.
Skunk Cleaner Shrimp
InvertLysmata amboinensis
The reef's tiny cleaning crew, grooming fish who line up for the service.
Skunk clownfish
FishAmphiprion akallopisos
The pale skunk stripe makes this anemonefish one of the most recognizable in the ocean.
Skunk Corydoras
FishCorydoras arcuatus
A boldly striped little catfish that breathes air and moves in cheerful gangs.
Skunk Loach
FishYasuhikotakia morleti
A feisty, burrowing loach with complex social behavior and a bold personality.

Sleeper
FishNimbochromis livingstonii
The Lake Malawi cichlid that fakes its own death to ambush prey.
Slender Betta
FishBetta bellica
A slender peat swamp betta that rewards patient, thoughtful keepers
Slender Hemiodus
FishHemiodus gracilis
A fast-moving Amazon schooler that thrives in large, active biotope communities.
Slender Lungfish
FishProtopterus dolloi
A living fossil that breathes air and can crawl across dry land.
Slender Rainbowfish
FishMelanotaenia gracilis
A rare, slender Australian rainbow from one of the continent's most remote river systems.
Slender Tail Hap
FishBuccochromis lepturus
A rarely seen Lake Malawi predator that hunts juvenile cichlids on sandy flats.
Slimy Sea Plume
CoralAntillogorgia americana
A flowing Caribbean sea fan that brings wild reef movement to the tank.
Slippery Dick
FishHalichoeres bivittatus
A bold, fast-moving wrasse that earns its unforgettable name.
Slobbering Catfish
FishBrachyplatystoma platynemum
A rarely-seen Amazonian giant named for its unusually thick, drooping barbels.
Small Knob Coral
CoralAstrea devantieri
Bold red-and-green boulder coral from the lesser-explored western Indian Ocean.
Small Knob Coral
CoralPlesiastrea versipora
A shade-loving reef coral that thrives where brighter species fear to go.
Smooth cauliflower coral
CoralStylophora pistillata
A chunky, branching SPS coral that thrives where the waves hit hardest.
Smudge spot cory
FishCorydoras similis
A small armored catfish that breathes air and thrives in a lively group.
Snakehead Betta
FishBetta channoides
A tiny, peaceful mouthbrooder from Borneo's blackwater forest streams.
Snakeskin Barb
FishDesmopuntius rhomboocellatus
A peaceful Bornean barb that really comes alive in a proper-sized school.
Snakeskin Gourami
FishTrichogaster pectoralis
A gentle giant gourami that thrives where few fish could survive.