Bumpnose trevally (Carangoides hedlandensis) is a saltwater species recorded in Taiwan, Singapore, Malaysia. It is found at depths of ≤ 40 m. The main season in Taiwan, Singapore, Malaysia runs spring, autumn.
Scientific name: Carangoides hedlandensis · Water: Saltwater · Season: Spring, Autumn
Size: up to 32 cm
The bumpnose trevally, known in Taiwan as 銅鏡, is a short, deep-bodied jack with a greenish-blue back and silvery belly. It is a common small trevally of Taiwan's embankment and harbour fishing, schooling close inshore where even beginners can catch it on light tackle. It placed 2nd in both the OCA's 2021 Q3 and 2020 Q2 angling reports.
The simplest thing to look for is a distinct break in the contour of the interorbital region — a "bump" above the snout that becomes more pronounced as the fish grows, which is where the name comes from and the readiest way to separate it from similar co-occurring trevallies. The body is compressed and deep, and in adults the head profile is very steep, so the dorsal profile is more convex than the ventral one. The dorsal fin is in two sections: the first has eight spines and the second one spine with 20 to 22 soft rays. The anal fin has two anteriorly detached spines followed by one spine and 16 to 18 soft rays, and the pelvic fin one spine and 18 soft rays. The lobes of the second dorsal and anal fins are elongated and filamentous, longer than the head. It inhabits coastal waters, often along bays and beaches, where it takes shrimp, small crabs and juvenile fish. It matters little to commercial fisheries and is taken by hook and line, trawls and seine nets; for anglers it is a bait-fished target from beaches and piers and is considered only a modest table fish.
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