Some pets have some strange habits. Whenever my cat sees me feeding the goldfish, she like to come over and beg for some of the golfish pellets that I feed to the fish. I don't know what they taste like, but my kitty sure finds them to be delicious. I think she likes goldfish pellets more than she likes her cat food.
Oh, and in case you were wondering what kind of fish food my kitty lilkes to eat, it's Wardley Premium Goldfish Floating Pellets.