any of three deep-bodied, cichlid fishes, Pterophyllum scalare, P. altum, and P. eimekei, inhabiting northern South American rivers, often kept in aquariums.
Origin: 1925–30; < NL; L scālāre, neut. of scālārisscalar; from its ladderlike markings
an·gel·fish (ān'jəl-fĭsh') n.
pl.angelfish or an·gel·fish·es
A brightly colored fish of the family Pomacanthidae of warm seas, having a laterally compressed body.
A freshwater fish (Pterophyllum scalare), native to rivers of tropical South America and having a laterally compressed, usually striped body. It is popular in aquariums. Also called scalare.