The Aulonocara jacobfreibergi (Undu Reef) or Lemon Jake Peacock is a very popular species of peacock cichlid found among African cichlid hobbyists. This species of Aulonocara is native to the waters of Lake Malawi, around the caves and rocks of Undu Reef and Tanzania. Males develop a metallic blue color on their face, and from just past their pectoral fins, down to their tails. The blue color is contrasted by a bright yellow color on the upper part of their head and behind their gills, along with their dorsal fin, pelvic, anal, and outer edge of their tail fin. The Lemon Jake peacock has a popular color variant called the Malawi Butterfly, native to the waters of Otter Point, which has a red and light metallic blue color pattern. The Eureka Red Jake is also a popular color variant which is line bred from the Otter Point jacobfreibergi. Males will get to be about 7″ in length and females will be a little smaller.