Scientific name -- Family Percidae
Size -- varies
Diet -- varies, predominantly plankton and small fish

Perch are a diverse assemblage of fish species native to fresh water around the world. The Nile Perch, Lates niloticus, is among the largest of freshwater fish, but while it lives in Lake Nasser, it is unclear whether this species ever lived in the ancient Nile. Some fish caught by ancient Egyptians are recognizable today, such as tilapia and tiger fish, while others are more difficult to recognize.