About This Fish

Australian Bass


The Australian bass (Macquaria novemaculeata) is also known as freshwater perch, eastern freshwater perch or perch. It belongs to family Percichthyidae under Order Perciformes of Class Actinopterygii. It is found in coastal rivers, lakes, streams and estuaries along the east coast of Australia from Fraser Island, Queensland to Wilson's Promontory, Victoria.



It has a moderately deep, elongated and laterally compressed body with tapering snout. The Australian bass is dark olive green or grayish on the back and sides with darker scale margins. The belly is silvery or whitish and the fins are mostly dusky brown to black but the tips of the anal and pelvic fins are white. The Australian Bass has arched dorsal profile and a forked caudal fin. It has moderately large eyes on the side of the head and a large, oblique mouth extending to below the middle of the eye in adult fish. It has a very distinct lateral line which follows the upper body profile. Juvenile fish under 12 cm long have banded and dark blotches on the gill cover.



The Australian bass is carnivorous and mostly feeds on aquatic insects, shrimps, crustaceans, tadpoles, small fish and worms. It is an extremely popular angling species which grows up to 65 cm in length and 4 kg in weight, although 40 cm and 1.5kg is common. Male Australian bass attain sexual maturity at a smaller size than female. It shows catadromous migration and it spends maximum times of life in fresh water but between May and August that migrates downstream into saltwater for spawning. For successful spawning, it prefers suitable water temperature and salinity which ranges from 14-20°C and 12-15 ppt. respectively.


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Location Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
New South Wales