- Elagatis bipinnulata
- EnglishName: Rainbow runner
- Local Name : Maaniyaa mas
- Size : Common to 80 cm; max. 1.2 m
- Family: Order : Specimen
- Distinctive Characters: First dorsal fin with 6 spines, second dorsal fin with 1 spine and 25-30 rays (including finlets). Anal fin with only 2 spines, the first slightly detached from the rest of fin and covered by skin in larger individuals. The second spine continues with 18-20 rays (including finlets). Elongate, fusiform and slightly compressed body. No scutes on lateral line. Caudal fin deeply forked. Colour: Body deep blue above, light pink to white below. Three broad longitudinal olive to yellowish bands on body, middle one running from snout through eye to caudal peduncle.
- Habitat and Biology: A pelagic species, usually found at or near the surface and close to reefs near oceanic islands. Forms small schools. Feeds on invertebrates and small fish.
- Distribution: Circumtropical.
- Remarks: Elagatis bipinnulata is sometimes associated with schools of K. pelamis (Skipjack tuna) and young T. albacares (Yellowfin tuna), and often caught in pole and line fishing as a by-catch.