ok i finally found a sunfish hybrid that peewee doesnt want to kill, its a mix between a green sunfish and a orange spotted sunfish. He looks healthy and has no marks on him, but heres my question on the base of his side fins are dark red. I looked closely and it doesnt look like a disease that i have seen or parasite. What should i do? what treatments are out there for him, im afraid tho if i take him back out of the tank peewee and the oscars wont be soo accepting again. heres a pic of him
