Hi, I'm new here in this forum. here is a question. i have 8 in Senagal Bichir in my tank alone so far. i wish to find a tankmate for her. The first choise in my mind is Tiger Oscar and i saw them in fs is about 5 in. Will this conbination work? or is there any other choise. i don't want to hurt any of them. so please help me out.