I had one of those once in a 20 gallon aquarium.
A goldfish ate it.
goldfish will eat anything.
During the recent hurricane I went several days without caring for my pond and the fish in it.
When I finally finished attending to all the serious matters, and checked in on my fishes, I made a gross discovery.
During the storm a bird fell in the pond. Whether it was alive of dead I do not know, but the Koi, goldfish, and minnows are that bird down to the bone. Everything but the elbows.
Wife did not believe me until I scooped out the pelvis and sorta flinged it at her from across the yard..