Atlantic Cod

Overview

A historically important commercial fish of the North Atlantic, once in vast numbers, now heavily managed. Native to North Atlantic, it is a popular choice among aquarists for its distinctive appearance and behavior.

History & Origin

Atlantic Cod originates from North Atlantic. It has been kept and selectively bred in the aquarium hobby for generations, producing many color forms and regional variants developed through captive breeding.

Appearance & Size

Atlantic Cod is a large fish, generally measuring about 60–150 cm when fully grown. Its body shape and species-specific coloration make it easy to recognize among Cod & Flatfish.

Temperament

Atlantic Cod is generally territorial and can be aggressive toward smaller or similar-shaped tankmates; keep it with robust, size-compatible species and provide ample space and visual barriers.

Care & Husbandry

A marine species best suited to experienced saltwater aquarists, it requires a mature, well-established aquarium with stable salinity (around 1.023–1.025 specific gravity), strong filtration and pristine water quality. Given its size, provide a spacious tank with robust filtration and room to swim. Feed a varied diet of high-quality prepared foods supplemented with live or frozen items, and quarantine new arrivals before adding them to the display.

Health & Lifespan

With good water quality and a balanced diet, Atlantic Cod typically lives 10–25 years in captivity. Watch for common aquarium ailments such as parasites, fungal infections and stress-related disease, and maintain stable parameters to keep it thriving.

Popularity & Recognition

Cods and flatfish are cold-water marine species appreciated for their form and, in food-fish contexts, worldwide economic value.