Species
Browsing 467 species. Use the filters below to narrow down.
Roseline Shark
FishSahyadria denisonii
The endangered Indian torpedo barb with a vivid red-and-black racing stripe
Rusty Angelfish
FishCentropyge ferrugata
A compact, reef-dwelling dwarf angel with rich rusty coloring and bold personality.
Ryukin Goldfish
FishCarassius auratus var. ryukin
The hump-backed beauty of fancy goldfish keeping, built for cool, calm ponds and tanks.
Sailfin Molly
FishPoecilia latipinna
The male's enormous sail-like dorsal fin makes this livebearer instantly recognizable.
Sailfin Molly
FishPoecilia velifera
The towering dorsal fin of this livebearer is a true showpiece when conditions are right.
sailfin tang
FishZebrasoma veliferum
A reef tang that unfurls its fins like a sail when threatened or showing off.
Sailfin Tang
FishZebrasoma velifer
Those enormous fins aren't just for show. They mean business.
Salween Barb
FishHampala salweenensis
A rare Salween barb that hunts by suction and needs to be kept in groups.
Scissortail Dartfish
FishPtereleotris evides
A graceful reef dartfish that hovers in open water and pairs for life.
Scopas Tang
FishZebrasoma scopas
A reef grazer that keeps algae in check across vast Indo-Pacific waters.
Scribbled Pufferfish
FishArothron mappa
A boldly patterned puffer that roams reef drop-offs with calm, solitary confidence.
Sea Walnut Comb Jelly
InvertMnemiopsis leidyi
A glowing, gelatinous predator that belongs in a very specialized setup.
Sebae Clownfish
FishAmphiprion sebae
A bold, territorial clownfish that pairs best with one specific anemone host.
Sergeant Major
FishAbudefduf saxatilis
Bold reef dweller with a notorious attitude that grows with age.
Severum
FishHeros severus
A large, easygoing cichlid with personality to spare and a surprisingly gentle nature.
Sharksucker
FishEcheneis naucrates
The fish that hitchhikes on sharks, and occasionally tries to attach to divers.
Sheep Pacu
FishAcnodon normani
A compact pacu with tiger stripes and a bad habit of snacking on scales.
Shortfin Molly
FishPoecilia mexicana
The wild ancestor of the molly we all know, built for tough conditions.
Shubunkin Goldfish
FishCarassius auratus var. shubunkin
A calico-patterned pond fish built for decades of companionship.
Siamese Algae Eater
FishCrossocheilus langei
The real Siamese algae eater is harder to identify than you'd think.
Siamese Algae Eater
FishCrossocheilus siamensisis
The genuine algae-eating workhorse that actually earns its keep in a planted tank.
Silver Arawana
FishOsteoglossum bicirrhosum
An ancient, leaping predator that quickly outgrows almost every home aquarium.
Silver Barbel
FishPareutropius longifilis
A shy but lively African schooling fish that thrives in numbers
Silver Mylossoma
FishMylossoma duriventre
A deep-bodied South American schooler that belongs in serious, large setups.
Silver Tetra
FishGymnocorymbus bondi
A peaceful Orinoco schooler that's more interesting than its plain adult looks suggest.
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.
Six-line Wrasse
FishPseudocheilinus hexataenia
A bold, reef-safe hunter that punches well above its size in attitude.
Slender Danio
FishBrachydanio aesculapii
A tiny, patterned danio from an isolated mountain range few fishkeepers know about.
Slender Danio
FishBrachydanio sp. "TW01"
A lively Myanmarese danio with a bold caudal peduncle mark and plenty of personality.
Slender Danios
FishBrachydanio feegradei
A lively schooling danio from Myanmar's isolated western mountains.
Slender Danios
FishBrachydanio kyathit
A small Burmese danio with variable patterning that keeps hobbyists guessing.
Slender Danios
FishBrachydanio sp. "Hikari"
A peaceful schooler from Myanmar with a taxonomic twist hiding in its stripes.
Slender Tail Hap
FishBuccochromis lepturus
A rarely seen Lake Malawi predator that hunts juvenile cichlids on sandy flats.
Slippery Dick
FishHalichoeres bivittatus
A bold, fast-moving wrasse that earns its unforgettable name.
Snake-skin Gourami
FishTrichopodus pectoralis
A big, peaceful gourami with wild origins in the flooded forests of Southeast Asia.