Cichlid Fishes of Lake Malawi, Africa

From site: 

This is a scientifically oriented, noncommercial site devoted to a fascinating trove of tropical biodiversity — both the largest lake-fish fauna and the largest vertebrate species flock on earth — the cichlids of southeastern Africa’s Lake Malawi. (It is Lake Nyasa or Niassa to the people of Tanzania and Mozambique, who share this giant rift lake with Malawi.)