decapterus maruadsi belongs to the family of trevally, the genus of trevally. Body is fusiform, slightly flattened. The lower jaw slightly protrudes from the upper jaw. The maxilla extends below the anterior edge of the eye. The upper and lower jaws each have a row of fine teeth; the hoe bone is a sagittal tooth band; the palatine bone and the tongue surface are elongated tooth band. The posterior edge of the opercular membrane is smooth. The number of gill rakers on lower branches (including tumor-like gill rakers) is 36-38. The dorsal anterior scale extends above the anterior border of the pupil. The straight part of the lateral line begins below the 12th to 13th rays of the second dorsal fin, all of which are ridge scales. The second dorsal fin is the same shape as the anal fin, the front fin rays are crescent-shaped, and the rear has a detached fin; the pectoral fin is long, and the end extends only below the origin of the second dorsal fin. decapterus maruadsi has a blue-green dorsal body and a silvery white belly. The dorsal and pectoral fins are pale to yellow-green; the second dorsal fin has a black margin, and its anterior fin rays have a white margin at the end; the caudal fin is yellow-green; the remaining fins are pale.

decapterus maruadsi is a warm-water pelagic fish. They often gather in groups to cruise near the sea. It likes to migrate in groups, often floating in groups during the day, and phototaxis at night. Has a long-distance migration habit.
decapterus maruadsi is a polyphagous fish, and the composition of bait varies with the predominant species of bait in the sea area. The Yangtze River Estuary in China and the coastal waters of northern Zhejiang mainly feed on krill and chaetognaths, followed by pteropods, amphipods, and other small fish. Foot cephalopods and shrimp, crabs and so on. decapterus maruadsi is found in Cambodia, China, Guam, Ryukyu Islands, Japan, Korea, Malaysia, Myanmar, Northern Mariana Islands, Philippines, Thailand, Vietnam.