This is a bag of 21/2-3" long Masked Julies. They are a VERY peaceful African Cichlid. I've had them spawn in community tanks that had smaller fish and nobody was the worse for the it. I had some spawn 2 weeks ago in a tank that has Angelfish (silver dollar size) and Rainbowfish in it and they are all getting along. They are a cave dweller, they may try to dig one if one isn't provided.