Rough scad – Trachurus lathami

Trachurus lathami is a species of marine fish belonging to the jack family, Carangidae. It is commonly known as the Latham’s horse mackerel. This fish is found in the waters of the southern hemisphere, specifically in the southwestern Indian Ocean.

Description & Characteristics

Trachurus lathami is a relatively small fish, with a maximum recorded size of 40.0 cm. It possesses a slender, fusiform body shape typical of horse mackerel species. This fish is distinguished by its elongated snout and a slightly forked caudal fin. The dorsal fin is characterized by a prominent anterior spine followed by a series of soft rays. The anal fin also features a distinct spine at its anterior edge.

Habitat and Occurrence

Trachurus lathami is a demersal fish, meaning it typically inhabits the bottom layers of the ocean. It is found at depths ranging from 30.0 to 200.0 meters, often congregating in large schools over the continental shelf and slope. This species is commonly encountered in the southwestern Indian Ocean, including areas off the coast of South Africa and Madagascar. This region encompasses both temperate and subtropical marine zones, highlighting the adaptability of Trachurus lathami to diverse oceanic environments.

Taxonomy

Trachurus lathami belongs to the Class: Teleostei, Order: Carangiformes, and Family: Carangidae. This classification places it within a diverse group of fishes that exhibit a wide range of adaptations for life in marine environments. The Carangidae family encompasses a variety of species, including jacks, scads, and horse mackerel, all characterized by their streamlined bodies and predatory lifestyles.

Feeding

Trachurus lathami is a carnivorous fish that feeds primarily on zooplankton and small fish. Its diet varies depending on its location and the availability of prey. It is an active predator, utilizing its streamlined body and powerful tail to chase down its prey. Its feeding habits play a crucial role in the marine ecosystem, contributing to the regulation of zooplankton populations and the transfer of energy through food webs.