There are plenty of fish species that are found in the oceans of Australia. Here is a list of some of the saltwater fish species. 

Barramundi: The Barramundi or Asian sea bass is widely found in the Indo-West Pacific region from South Asia to Paua New Guinea and Northern Australia. They have an elongated body form with a large, slightly oblique mouth and an upper jaw extending behind the mouth. This fish of Australia can grow up to 1.8 m long with a maximum weight of about 60 kg. 

Murray Cod: The Murray Cod is a large Australian predatory freshwater fish of Australia. It is an important part of Australia’s vertebrate wildlife. A long-lived adult Murray cod are carnivorous and eat up other fish. The adult fish can reach up to a length of 80-100 cm. 

Yellowtail Amberjack: The Yellowtail Amberjack is a large fish that is found in the Southern Ocean. They can reach out up to 180 cm in length. They inhabit rocky reefs and adjacent sandy areas in the coastal waters and sometimes enter the estuaries.

Longtail Tuna: The Longtail Tuna is also known as the northern bluefish tuna, which is used to differentiate them from the southern bluefin tuna. This fish of Australia can reach up to 145 cm in length and 35.9 kg in weight. 

Golden Perch: The Golden Perch is a medium-sized yellow or golden colored fish of Australia. They are commonly 30-40 cm in length and 1-2 kg in rivers. This fish has an elongated, deep but lateral compressed body with small to moderate-sized eyes and a distinct hump above their head. 

Australian Bass: The Australian Bass is a small to medium-sized fish of Australia which is primarily found in coastal rivers and streams. The wild river Australian bass is 0.4-0.5 kg in weight and 20-30 cm in length.

Eel-tailed Catfish: The Eel-tailed Catfish is a species of catfish. This fish of Australia is a freshwater native to the Murra-Darling river system of eastern Australia. They commonly grow up to 50 cm in length and about 1.8 kg in weight.