Stripetail rockfish Stripe-tailed dottyback Stripey Stripped robber Stripped weakfish Strong spined silver-biddy Strongspine silver-biddy Struhsaker's chromis Struhsaker's deep-sea smelt Stubbeard plunderfish Stubby lanternfish Stumptooth minnow Stupid  Lenok Sturgeon Sturgeon chub Sturgeon grenadier Sturgeon poacher Stylish Scorpionfish Stymphalia chub Stymphalia minnow Sua bumblebee goby Subnose darter Subparallel lanternfish Sucker barb Sucker fish Sucker head Sucker throat catfish Sucker-belly loach Suckerlip blenny Suckermouth catfish Suckermouth minnow Suco croaker Suez fusilier Sulawesi anchovy Sulawesi coelacanth Sulawesi fangblenny Sulawesi moray Sulawesi Silverside Sulfur limia Sulfurhead Aulonocara Sulphur damsel Sulphur goatfish Sulphur molly Sulu eelblenny Sulu fangblenny Sulu goby Sulu Gollumshark Sulu Sea skate Sulu velvetfish Sulu viviparous brotula