Ray-finned fishes finder
| Common name | Scientific name | Family | Order |
|---|---|---|---|
| Wavy Grubfish | Parapercis haackei | Pinguipedidae | Perciformes |
| Wedgetail Triggerfish | Rhinecanthus rectangulus | Balistidae | Tetraodontiformes |
| Weedy Scorpionfish | Rhinopias aphanes | Scorpaenidae | Scorpaeniformes |
| Weeping Toadfish | Torquigener pleurogramma | Tetraodontidae | Tetraodontiformes |
| West Australian Seahorse | Hippocampus subelongatus | Syngnathidae | Gasterosteiformes |
| Western Clown Anemonefish | Amphiprion ocellaris | Pomacentridae | Perciformes |
| Western Jumping Blenny | Lepidoblennius marmoratus | Tripterygiidae | Perciformes |
| Western Talma | Chelmonops curiosus | Chaetodontidae | Perciformes |
| Whip Goby | Bryaninops yongei | Gobiidae | |
| Whiskered Prowfish | Neopataecus waterhousii | Pataecidae | Scorpaeniformes |
| White Belly Damsel | Amblyglyphidodon leucogaster | Pomacentridae | Perciformes |
| Whitebarred Boxfish | Anoplocapros lenticularis | Ostraciidae | Tetraodontiformes |
| Whitebarred Goby | Amblygobius phalaena | Gobiidae | Perciformes |
| White-ear | Parma microlepis | Pomacentridae | Perciformes |
| White-edge Coronation Trout | Variola albimarginata | Serranidae | Perciformes |
| Whitemouth Moray | Gymnothorax meleagris | Muraenidae | Anguilliformes |
| White's Seahorse | Hippocampus whitei | Syngnathidae | Gasterosteiformes |
| Whitespot Parrotfish | Scarus forsteni | Scaridae | Perciformes |
| Whitespotted Anglerfish | Phyllophryne scortea | Antennariidae | Lophiiformes |
| Whitestreak Grubfish | Parapercis stricticeps | Pinguipedidae | Perciformes |
| Whitley’s Gurnard Perch | Maxillicosta whitleyi | Neosebastidae | Scorpaeniformes |
| Wideband Anemonefish | Amphiprion latezonatus | Pomacentridae | Perciformes |
| Widebody Pipefish | Stigmatopora nigra | Syngnathidae | Gasterosteiformes |
| Wirenet Rockcod | Epinephelus hexagonatus | Serranidae | Perciformes |
| Yellow and Blueback Fusilier | Caesio teres | Lutjanidae | |
| Yellow Boxfish | Ostracion cubicus | Ostraciidae | Tetraodontiformes |
| Yellow Cardinalfish | Apogon flavus | Apogonidae | Perciformes |
| Yellow Crested Weedfish | Cristiceps aurantiacus | Clinidae | Perciformes |
| Yellow Sabretooth Blenny | Petroscirtes fallax | Blenniidae | Perciformes |