I purchased two Tiger Oscars (as least that's what I think they are?) the day before the 8th this month, and my black and red one has been laying at the bottom of the tank on his belly as well as his side. My white and red one seems to know something is wrong with the black one and has been staying down there with him to keep him company I believe because the white one has been acting just fine. If anyone can help it'd be much appreciated.