I have a tetra that I absolutely forget the name of. He was accidently put in the bag when I bought some mixed tetras. He is the size and shape of a small pristella however he is clear with black tips on his top and bottom fin, he has a black dot on his side like a bleeding heart (which have a red one, I know), his tail is red and his eyes are completely black. He is happily hanging out with the pristellas, but I would like to get more of the same (I don't want him lonely and besides, he's pretty). Help!