I just got Spectre about a week ago and he hasn't been eating for the past few days. I noticed that his water was a little cold so I put a heater in and now the temp is around 75°F. Just this morning I was looking at him and I noticed two very small holes in his fins. One hole in the middle of his dorsal fin and one on the bottom fin. He is now in a one gallon bowl. He is as active as ever the only difference is he's not eating. Is he sick, and if so what should I do?