i opened up a 3ft+/24kg long tail tuna and found 7 8" tailor(bluefish), 4 6" pichards and 3 medium size squid.... twas a very good couple of days for that fish.... or was it..... who knows!
i would think in the wild they eat whenever they caught someone slippin' maybe 10x's mon., 3x's tue., none wend. basically they eat anything they can at the time of finding it
It really depends on the species, some giant cats gorge to much that they don't have the energy to look for more food and take a couple days to digest their food, just like snakes...