Ok, so we have this sunfish that my daughter caught on a school field trip and brought home two years ago. It is our o my pet and very loved. We have learned a lot since adopting this fish but are always encountering new things. Recently we decided to take our place to the pet store because we went camping for 8 days, left a feeder in the tank, but somehow the pie o didn't get enough food and started sucking on Sunny our sunfish. Sunny had red on his side's and we thought it was An illness at first but then realized it was from Bob the place. We had Bob with Sunny for over a year together and always seemed to get along, but after taking Bob out Sunny got really and! We left on another 3 day vacation thinking he would settle down because the pet store lady said they don't get attached but we have been back now for 3 days and he is still angry when we come near the tank. He isn't eating his peas and bloodworms like he had been either. We are so worried to see him this way, with stripes, flexed gills and jetting around when he used to love our attention. What do you think happened and do you think getting another place would help. Could he be lonely? Thanks for any help, I know it's not the normal fish people have but we love and try to take care of him the best we can!