Apistogramma borellii

The umbrella cichlid (Apistogramma borellii), also known as the umbrella apisto or yellow dwarf cichlid, is a small South American dwarf cichlid in the genus Apistogramma. It lives in the Paraguay River basin and along the lower Paraná River, farther south than most of its relatives, and can therefore tolerate cooler water than the rest of the genus. It stays very small, with males reaching about 3.9 centimetres in standard length, and it eats insects, crustaceans and worms. Like most Apistogramma it is a cave spawner: in the wild it breeds in the rainy season when flooding brings food, the female draws the male into a cave, and after spawning she drives him out and fans the eggs, which hatch after about 36 hours, then guards the young closely. The specific name honours the zoologist Alfredo Borelli (1858 to 1943), who collected the type specimen. It is traded commercially as an aquarium fish and the IUCN lists it as Least Concern.