Will Bluegill Eat Goldfish . Also very important to note is that there is a black spot on their ear. One side of the tank had the larger bluegill and a bullhead, and the other side had a smaller bluegill and a comet goldfish. Pet Bass Feeding Experiment (Goldfish) YouTube from www.youtube.com Some bluegill owners feed mealworms or grubs purchased from pet stores. Yes, bluegill is a popular fish throughout north america. I linked her post for you to read.