There are approximately five to six species of Decapterus known from the Indian Ocean, with Decapterus macarellus being the only one recorded from the Maldives.
Details
§ 01
size
Max. 32 cm
color
Bluish green above, silvery below. A black opercular blotch distinct. Caudal fin yellowish green. Anal and pelvic fins whitish.
This species of fish is mostly found in open water and is abundant in island habitats. It can sometimes be seen near the surface, but usually inhabits depths of 40-200 m. Its diet consists of small planktonic invertebrates.
distinctive characters
The first dorsal fin has 8 spines, the second dorsal fin has 1 spine and 31-37 rays (including finlets), the anal fin has 2 detached spines followed by 1 spine and 27-31 rays (including finlets), the body is very elongate and round, and the rear end of the upper jaw is moderately rounded and slanted anteroventrally. The straight part of the lateral line has scales followed by scutes at the back.