Physiology
This is a fairly large salmonid, with average adult specimens measuring 71 to 76 cm (28 to 30 in) long and weighing 3.6 to 5.4 kg (7.9 to 12 lb). Record-sized specimens have been measured to a maximum of 153 cm (60 in) and a weight of 45 kg (99 lb). The colouration of young Atlantic salmon does not resemble their adult stage. While they live in fresh water, they have blue and red spots. While they mature, they take on a silver-blue sheen. When adult, the easiest way of identifying them is by the black spots predominantly above the lateral line, although the caudal fin is usually unspotted. When they reproduce, males take on a slight green or red colouration. The salmon has a fusiform body, and well-developed teeth. All fins, save the adipose, are bordered with black.
Read more about this topic: Atlantic Salmon
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