Whiting

Overview

The Whiting (Merlangius merlangus) is a common, cod-like marine fish found throughout the Northeast Atlantic, including the North Sea, Baltic Sea, and Black Sea. It is a benthopelagic species that typically inhabits coastal and offshore waters, moving between shallower nursery grounds and deeper adult feeding areas as it matures.

Distribution & habitat

This species is widely distributed from the southeastern Barents Sea and Iceland down to the coasts of Portugal. It also inhabits the Mediterranean, Aegean, Adriatic, and Black Seas. Whiting are generally found over various substrates, including mud, gravel, sand, and rock, often preferring depths between 30 and 100 meters.

Appearance

Whiting have an elongated, fusiform body with a small head and a terminal mouth. They are easily identified by their three dorsal fins and two anal fins. The coloration is variable, typically ranging from yellowish-brown to dark blue or green on the back, fading to a silvery-white belly. A key diagnostic feature is a small, distinct dark blotch located at the base of each pectoral fin. Juveniles often possess a small chin barbel, which typically disappears as the fish reaches maturity.

Biology & behavior

Whiting are fast-growing fish that reach sexual maturity by their second year. Their life cycle involves a pelagic larval stage, during which juveniles often associate with jellyfish for protection in shallow coastal waters. After their first year, they migrate to deeper, open-sea habitats. They are batch spawners, releasing pelagic eggs over an extended period to maximize survival chances.

Feeding

As active predators, whiting feed on a variety of bottom-dwelling organisms. Their diet primarily consists of crustaceans such as shrimps and crabs, as well as mollusks, polychaete worms, cephalopods, and smaller fish.