Threadfin jack – Carangoides otrynter

Carangoides otrynter, commonly referred to as the Carangoides otrynter, is a species of marine fish belonging to the jack family, Carangidae. This fish is known for its distinctive physical characteristics and its presence in specific marine environments.

Description & Characteristics

The Carangoides otrynter is a moderately sized fish, reaching a maximum length of 60.0 cm. Its body is typically elongated and compressed, with a slightly forked tail. The dorsal fin consists of two parts – a spiny anterior portion and a soft posterior portion, separated by a shallow notch. The anal fin is also divided, with two spines followed by soft rays. The coloration of Carangoides otrynter is generally silvery-grey, with a darker back and a lighter underside. It has a distinctive black spot near the base of the pectoral fin, which helps distinguish it from other related species.

Habitat and Occurrence

Carangoides otrynter is found in a variety of marine habitats, inhabiting depths ranging from 60.0 to 100.0 meters. These fish are commonly observed in coastal waters, often associating with coral reefs and rocky outcrops. Their distribution is primarily restricted to tropical and subtropical regions. Carangoides otrynter is typically found in the Indian Ocean and the western Pacific Ocean, making it a prevalent presence in these aquatic ecosystems.

Taxonomy

The species Carangoides otrynter belongs to the Class: Teleostei, Order: Carangiformes, and Family: Carangidae. This classification places it within a group of ray-finned fishes, specifically those exhibiting a streamlined body shape and possessing a characteristic dorsal fin with two distinct parts. The family Carangidae encompasses a diverse range of species, commonly referred to as jacks, scads, and trevallies, known for their predatory habits and their importance in both commercial and recreational fisheries.

Feeding

Carangoides otrynter is a carnivorous fish, feeding primarily on smaller fishes, crustaceans, and cephalopods. Its feeding strategy involves actively pursuing prey, utilizing its powerful swimming abilities to chase and capture its targets. The presence of Carangoides otrynter within a particular ecosystem indicates a healthy balance within the food web, as they play a crucial role in regulating populations of other marine organisms.