Bass, Chilean Sea – Crozet Islands, Prince Edward and Marion Islands, Chile
Patagonian Toothfish, more commonly known as Chilean Sea Bass, are widely distributed in the Southern Hemisphere south of 40°S latitude. It is a long-lived species that is thought to reach 50 years in age. Sexual maturity is reached between 6-12 years and fecundity is moderate.
Due to its high commercial value, Patagonian Toothfish has been targeted by illegal, unregulated and unreported (IUU) fishers, which have depleted some populations. The Commission for the Conservation of Antarctic Marine Living Resources is the principal managing authority for Patagonian Toothfish and has made a concerted effort in the past decade to eliminate IUU fishing. However a small but persistent level remains.
In these regions, some of the Patagonian Toothfish populations are depleted, while others have unknown abundances, and there is lack of effective management in place to control fishing. Patagonian Toothfish are primarily caught using bottom longlines which cause some damage to bottom habitats. The fishing method also catches some species of concern, including skates, grenadiers, and seabirds. Recent implementation of bycatch mitigation measures has reduced seabird bycatch. IUU vessels however do not employ these measures and further contribute to seabird mortality.