Barramundi are opportunistic predators and eat just about anything
that lives in the water. This includes insects, spiders, prawns, fish,
other barramundi and even crocodiles! In fact, a barramundi can
consume up to 60 per cent of its own length.
The size of prey is largely determined by the size of the barramundi.
The diet of larger barramundi consists of 60 per cent fish and 40 per
cent crustaceans, while smaller barramundi eat mostly small prawns.
As water temperatures cool during the dry seasons (May to August),
barramundi become less active and eat less frequently. During the
build-up to the wet season, water temperatures can be up to 10°C
higher than during the dry season, and barramundi activity increases
with the warmer temperatures.