Image: Mulloway gas bladder

Mulloway gas bladder

The gas bladder (also called a swim bladder) of a juvenile Mulloway. The presence of multiple branched appendages along the sides of the gas bladder is an important character used to identify the genus Argyrosomus.

Stephen Ward


The fish was caught in the Clarence River adjacent Iluka, New South Wales, 20 March 2013. It is now registered in the Australian Museum ichthyology collection (AMS I.46169-001). The photograph was taken by District Fisheries Officer Stephen Ward.


Sasaki, K, 2001. Sciaenidae. Croakers (drums). Carpenter, K.E. & V.H. Niem (ed). pp 2791-3379, In The Living Marine Resources of the Western Central Pacific. Vol. 5. FAO species identification guide for Fishery purposes. FAO.

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Tags Mulloway, Argyrosomus japonicus, Sciaenidae, fishes, ichthyology, gas, swim, bladder, marine,