Ray-finned fishes finder
| Common name | Scientific name | Family | Order |
|---|---|---|---|
| Serpent Eel | Ophisurus serpens | Ophichthidae | Anguilliformes |
| Sevenspot Archerfish | Toxotes chatareus | Toxotidae | Perciformes |
| Sharptail Sunfish | Masturus lanceolatus | Molidae | Tetraodontiformes |
| Short Boarfish | Parazanclistius hutchinsi | Pentacerotidae | Perciformes |
| Short Tapetail | Parataeniophorus brevis | Cetomimidae | Stephanoberyciformes |
| Shortpouch Pygmy Pipehorse | Acentronura breviperula | Syngnathidae | Gasterosteiformes |
| Shortsnout Lancetfish | Alepisaurus brevirostris | Alepisauridae | Aulopiformes |
| Short-tail River Pipefish | Microphis brachyurus | Syngnathidae | |
| Shoulderspot Goby | Gnatholepis cauerensis | Gobiidae | |
| Shovelnose Catfish | Ariopsis paucus | Ariidae | Siluriformes |
| Sidespot Goatfish | Parupeneus pleurostigma | Mullidae | Perciformes |
| Sieve-Patterned Moray | Gymnothorax cribroris | Muraenidae | |
| Silver Dory | Cyttus australis | Cyttidae | Zeiformes |
| Silver Drummer | Kyphosus sydneyanus | Kyphosidae | Perciformes |
| Silver Grunter | Mesopristes argenteus | Terapontidae | |
| Silver Lightfish | Phosichthys argenteus | Phosichthyidae | Stomiiforomes |
| Silver Perch | Bidyanus bidyanus | Terapontidae | Perciformes |
| Silver Spot | Threpterius maculosus | Chironemidae | Perciformes |
| Silver Sweep | Scorpis lineolata | Kyphosidae | Perciformes |
| Silverside | Argentina australiae | Argentinidae | Argentiniformes |
| Singular Bannerfish | Heniochus singularius | Chaetodontidae | Perciformes |
| Sinuous-Gudgeon | Odonteleotris macrodon | Eleotridae | Perciformes |
| Sixband Parrotfish | Scarus frenatus | Scaridae | Perciformes |
| Sixline Wrasse | Pseudocheilinus hexataenia | Labridae | Perciformes |
| Sixspine Leatherjacket | Meuschenia freycineti | Monacanthidae | Tetraodontiformes |
| Slender Rainbow Wrasse | Suezichthys gracilis | Labridae | Perciformes |
| Slender Sprat | Spratelloides gracilis | Clupeidae | Clupeidae |
| Slender Squirrelfish | Neoniphon sammara | Holocentridae | Beryciformes |
| Slender Suckerfish | Echeneis naucrates | Echeneidae | Perciformes |