Western Rock Blackfish

Girella tephraeops

The Western Rock Blackfish is a reef-associated species found primarily in the Eastern Indian Ocean, specifically around Western Australia. Divers can spot this fish in shallow rocky reefs, often in small groups under ledges and within caves. The fish is characterized by its dark gray coloration, which can quickly change to a blotchy pattern of mixed pale and dark irregular spots. This ability to change color provides it with a degree of camouflage in its rocky habitat. The Western Rock Blackfish can reach a maximum length of 61 cm. It is harmless to humans and does not have any evaluated conservation status according to the IUCN Red List. Divers encountering this species may find it under ledges or in caves, where it exhibits a calm demeanor. The fish's dark fins and body shape, which is short and deep, make it distinguishable from other reef fish. The fish is not considered rare, as it has been recorded at multiple dive sites, making encounters relatively common for divers exploring its preferred habitats.