Lough Neagh Pollan

The pollan or Irish pollan is a freshwater whitefish known only from five Irish lakes, Lough Neagh, Lower Lough Erne, Lough Ree, Lough Derg and Lough Allen. The pollan faces competition from introduced species such as pike, roach and zebra mussel, and the populations rely on restocking for survival. The pollan populations are threatened by ecosystem changes such as eutrophication and increases in species, including pike, roach and zebra mussel. Only the population of Lough Neagh in Northern Ireland remains abundant and supports a small commercial fishery. The other Northern Irish population in Lough Erne has severely declined. The Lough Allen population was only confirmed for the first time in 2006. Other populations rely on stocking for their survival.

Source: Wikipedia