TREVALLY, BLUE SPOTTED
The Blue Spotted trevally, Caranx bucculentus (also known as the wide-mouthed trevally), is a species of moderately large marine fish in the jack family Carangidae. It is a benthopelagic predator, taking a variety of crustaceans including crabs and prawns as a juvenile, before shifting to a more fish-dominated diet as an adult. Sexual maturity is reached at 110 mm in length and one year of age, with spawning occurring year round with a peak in spring. Growth is estimated to be 82.2 mm per year for both sexes, reaching a maximum known length of 66 cm. Bluespotted trevally are commonly taken as bycatch in prawn fisheries, however are of little commercial value and often discarded. They are occasionally taken by anglers on lures and baits, but are considered mediocre table fare.
It has a body shape characteristic of many of the larger species of Caranx, possessing a strongly compressed, oblong form with the dorsal profile, particularly anteriorly, much more convex than the ventral profile. The dorsal fin is in two distinct sections, the first consisting of eight spines while the second has one spine and 18 or 19 soft rays. The anal fin consists of two detached spines anteriorly followed by one spine and 15 to 17 soft rays, while the pelvic fin has 1 spine followed by 18 soft rays. The species lateral line is very strongly curved over a short length, becoming straight before the origin of the second dorsal fin, with this straight section over 2.5 times the length of the curved section. The curved section contain 40 to 50 scales while the straight section contains no scales, but 33 to 39 strong scutes. The breast is naked ventrally, with this area extending to behind the origin of the pelvic fins and diagonally to the base of pectoral fins. The eyes have a moderately well-developed posterior adipose eyelid which usually extends to the posterior edge of the pupil. The upper jaw contains an outer row of strong canines and an inner band of villi form teeth, while the lower jaw has only a single band of conical teeth. The species has 26 to 31 gill rakers in total and 24 vertebrae.
Bluespotted trevally are occasionally caught by recreational fishermen on various baits and lures, and are considered to a good sport fish, but tend to be overshadowed by giant trevally and blue fin trevally in reputation. Catching Trevally is a lot of fun because they fight so hard. They have a soft mouth so can rip off the hook quite easy if not played right. When you use flasher rigs you can catch trevally. The baits they seem to like are Bonito and Mullet. The Band Fishing Rig is ideally suited because of the fact the Band takes the oomph out of line as the fish is fighting, and it works like a shock absorber so if your into catching Trevally give the Flasher Rigs ago with the Band Fishing Rig and your Trevally catch rate will greatly improve.
The Blue Spotted Trevally inhabits the tropical waters of the East Indian-West Pacific Ocean, and is restricted to a smaller range than most of its relatives. The species range extends from the waters of the South China Sea around Taiwan and Borneo south through eastern Indonesia and the Arafura Sea around Papua New Guinea. The species is commonly found off northern Australia, especially the Gulf of Carpentaria, but is occasionally seen as far south as Gladstone, Queensland.
The Blue Spotted Trevally is an inshore fish, generally inhabiting coastal waters throughout its range. The species is known to inhabit shallow bays over sand, mud, and rarely sea grass bottoms, as well as slightly deeper waters in bays. Extensive sampling across the Gulf of Carpentaria indicates the maximum biomass for the species occurs at around 28.1 m depth, indicating the species preferentially inhabits substrate of this depth
The Blue Spotted Trevally inhabits the most part of the northern shores of Australia. It is known for occupying coastal areas from Northern part of Western Australia to North Queensland.