beaconfish
/ˈbiːk(ə)nfɪʃ/noun (plural same or beaconfishes)A popular aquarium characin from tropical South America, with a red and gold spot near the base of the tail fin and another near the eye.- Hemigrammus ocellifer, family Characidae.
Phenotypically beacon fish are brown to greenish-yellow in color with a silvery iridescence....- The deep body outline of the Beacon Fish follows the general tetra pattern.