The Arctic Char, Salvelinus alpinus, in Ireland

Size
Arctic char can attain weights in excess of 12.5kg and 800mm. The rod caught record stands at 13.46kg from the Canadian North West Territories. The majority of sea-run fish are in the range of 0.5 to 5kg. As mentioned earlier most landlocked populations of char do not attain these sizes. A combination of genetics and environmental factors restrain the growth of the char and in some lakes adults reach maturity at 100mm and 0.1kg. Landlocked arctic char can attain quite prodigious sizes as evinced by the staggering chars of 10kg caught in Lake Geneva. Similar sized fish are also caught in some large Scandinavian lakes where ferox individuals exist.

Most char in Ireland are between 190 and 360mm when mature. There is an old and unsubstantiated report that char from Lough Owel were as big as 1.4kg, but as this population is now extinct the fact of the matter may never be known. What is known is that the largest wild char known today are those from Lough Mask. These fish are known to reach lengths of 360mm and a weight just in excess of 500g. Large char were recorded in Bunaveela lake by the Salmon Research Agency, however it is not clear weather these were escaped farmed fish or 'well fed' char feeding around the fish cages. The majority of fish from Lough Eske are less than 320mm and average only 24mm. They are thought to quite representative of the average char population in Ireland.

Recent reports of large char from Scottish lakes coincide with the appearance of aquaculture cages on these lakes. It appears some char develop a taste for the fish pellets and grow quite well on them. Char which have supplemented their diet with pellets have been caught to 3kg.


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