 The creek whaler feeds predominantly on small teleost fishes (including threadfin breams and lizardfishes) and crustaceans (including penaeid prawns and mantis shrimps); cephalopods are also infrequently consumed.Known parasites of this species include the tapeworm "Callitetrarhynchus gracilis", and a nematode in the genus "Pulchrascaris".Like other members of its family, the creek whaler is viviparous, with the developing embryos receiving nourishment from the mother through a placental connection formed from the depleted yolk sac.