Bar­ra­mundi are predators and prey They help support pelicans and file snakes, among other possible predators, as well as controlling the population’s species on which they prey.

Lates cal­car­ifer is se­ri­ally her­maph­ro­ditic with males reach­ing ma­tu­rity at 37 to 72 cm and chang­ing into fe­males start­ing at 73 cm, at around five years, three to five years, or six to eight years de­pend­ing on the source  Males ma­ture at three to five years, but this study was con­ducted in cage farmed fish, which may have dif­fer­ent mat­u­ra­tion times than wild fish. Some male spec­i­mens do get larger than 73 cm. The tran­si­tion from male to fe­male is short, last­ing as lit­tle as a week, and may not occur in all in­di­vid­u­als.