Template:POTD/2022-12-26
The green terror (Andinoacara rivulatus) is a colorful species of freshwater fish in the cichlid family, Cichlidae. The fish originates from the Pacific side of South America from the Tumbes River in Peru to the Esmeraldas River in Ecuador. It is polymorphic and can have white or gold-orange edging to the tail and dorsal fins. As its name implies, late juvenile-phase and adult-phase specimens can be very aggressive. This green terror was photographed at Karlsruhe Zoo in Germany.Photograph credit: H. Zell