Species
Browsing 3,374 species. Use the filters below to narrow down.
Slender Lungfish
FishProtopterus dolloi
A living fossil that breathes air and can crawl across dry land.
Slender Piranha
FishSerrasalmus elongatus
A sleek, solitary predator that's one of the easiest piranhas to identify correctly.
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 Loach
FishPangio myersi
A social, eel-like loach that piles into hiding spots with its companions.
Slimy Sea Plume
CoralAntillogorgia americana
A flowing Caribbean sea fan that brings wild reef movement to the tank.
Slipper Coral
CoralHerpolitha limax
A free-living, tongue-shaped coral that roams lagoon floors on its own terms.
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.
Smallfin Fighter
FishBetta miniopinna
A tiny, dark peat-swamp Betta with vivid red pelvic fins and a gentle nature.
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.
Smallscale Archerfish
FishToxotes microlepis
The freshwater archer that hunts insects by spitting water with sniper precision.
Smokey Glass Catfish
FishKryptopterus cryptopterus
A ghostly schooling catfish that disappears against the current
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.
Snail-crusher Hap
FishTrematocranus placodon
A snail-crushing Lake Malawi hap with a specialist trick most cichlids lack.
Snakehead Betta
FishBetta channoides
A tiny, peaceful mouthbrooder from Borneo's blackwater forest streams.
Snake Polyp
CoralIsaurus cliftoni
A reef-safe Pacific zoanthid that's forgiving enough for beginners to keep.
Snake Polyp
CoralIsaurus tuberculatus
Unusual colonial zoanthid with a distinctly tubular, snake-like body form.
Snakeskin Barb
FishDesmopuntius rhomboocellatus
A peaceful Bornean barb that really comes alive in a proper-sized school.
Snake-skin Gourami
FishTrichopodus pectoralis
A big, peaceful gourami with wild origins in the flooded forests of Southeast Asia.
Snakeskin Gourami
FishTrichogaster pectoralis
A gentle giant gourami that thrives where few fish could survive.
Snowball Pleco
FishBaryancistrus sp. "L142"
A boldly spotted Amazonian pleco that gets feisty as it grows up.
Snowball Pleco
FishHypancistrus inspector
Bold spotted pleco from Venezuelan rapids, compact enough for a mid-size tank.
Snowflake Blenny
FishSalarias ramosus
A personable reef grazer with bold patterning and surprising air-breathing ability.
Snowflake Coral
CoralCarijoa riisei
A soft, branching coral that frosts live rock with white, feathery polyps.
Snowflake Eel
FishEchidna nebulosa
A crustacean-crushing moray that coexists peacefully with fish tankmates.
Snyder's Barb
FishPuntius snyderi
Taiwan's little-known barb that rivals the golden barb in looks but rarely in fame.
Social Fairy Wrasse
FishCirrhilabrus rubriventralis
A jewel-toned Red Sea wrasse that dances through the water column in groups.
Soft Coral
CoralAlcyonium pacificum
A soft coral from Japanese waters that suits newer reef keepers well.
Sohal Tang
FishAcanthurus sohal
A bold Red Sea beauty that rules its territory with zero tolerance for rivals.
Soldier Lionfish
FishPterois miles
A bold, venomous reef predator wearing its warning in every fin.
Solid Coral
CoralPorites solida
A boulder-sized reef builder with a smooth, sculpted profile and understated elegance.
Solitary Cup Coral
CoralCynarina lacrymalis
A puffy, jewel-like solo coral that thrives in calm, dimly lit reef spots.
Solitary Disk Coral
CoralScolymia wellsii
A bold, single-polyp coral that rewards patient feeding with vivid growth.