Like a cat/dog/lizard/snake/etc? Referring to a break in and not deliberately feeding them the fish.

My first wife's sister's siamese ate my first baby arowana from my first tank while we were pet sitting.
It was probably lucky for the aro. I only had a 10g tank.
Cat knocked a 110v light fixture into the tank too, in its getaway, and splashed all over. I got a flashlight, went to the fusebox (1920's farmhouse) and cut the power before trying to rescue him from the floor; but the cat got away with him in the dark.
Years later I had our Rusty cat bring home a 6" trout and leave it on the doormat. In truth, it had been raining, but we lived in the city! Didn't get a photo of the trout, but he was a real mouser.
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I’ve often heard cats bringing pray back and leaving it on the carpet / floor is the equivalent of them giving you a gift...