Spawning period and growth of yellowfin bream, Acanthopagrus australis (Günther), in Moreton Bay, Australia

Abstract

Monthly changes in the gonosomatic index indicate that yellowfin bream, Acanthopagrus australis, in Moreton Bay have a short spawning season with a peak during the period July to August each year. The growth rate of A. australis was estimated from tag‐recapture data and by length‐frequency analysis. Modes representing age classes 0, I and II often appeared in length‐frequency distributions, however modes for older age classes were difficult to identify. The von Bertalanffy growth curve parameters calculated from release–recapture data are: L∞= 29.5 cm; K= 0.51; t0=– 0.32 years.