Lates longispinis, also known as the Rudolf lates or Turkana perch, is a species of latid fish that is endemic to Lake Turkana (formerly known as Lake Rudolf) in Kenya and Ethiopia. It grows to 27.5 centimetres (10.8 in) in length. Lates longispinis is important to commercial fisheries and is also known as a gamefish. It is not known to exist in the aquarium fish trade.
Not much is known about the breeding habits of L. longispinis. It spawns in the open water in the middle of the lake, and parental care is highly unlikely. The eggs and fry are believed to be pelagic.