Trout Catch GFI 1008-14
Found in almost every burn, river and loch in the country, Scottish trout show a remarkable variation in growth and age span, in colour and spot pattern and in life history traits. Mature specimens can weigh from as little as 10g to well in excess of 10kg. Their growth rate and ultimate size are dictated largely by food availability and ambient water temperatures. Thus, growth-stunted, but often highly-coloured, trout are the norm in hill burns and in heavily-populated, low-nutrient hill lochs. In these lochs, most of the trout feed almost entirely on small aquatic invertebrates and on flies blown from the surrounding land. However, particularly in deeper lochs in the Highlands, some trout develop the ferox habit of feeding on other fish, especially the commonly-occurring shoals of Arctic charr (Salvelinus alpinus L.) and then they can grow very large. Better growth of the average Scottish trout can occur when they have more space to roam, or when they migrate to feed in more fertile lochs, or into rivers, brackish estuaries, sea lochs, or the open sea. Two broad types are commonly recognised; freshwater-residents called brown trout and anadromous (sea-running) migrants called sea trout. Trout living in estuaries or brackish sea lochs, intermediate between these broad types, are referred to as slob trout. Once they mature, like salmon, all of these forms of trout possess a remarkable instinct to return to their natal areas in order to spawn in early winter. GFI 1008-14
Size: 5030px × 4855px
Location: River Tay Aberfeldy Perthshire Tayside Region Scotland UK
Photo credit: © David Gowans / Alamy / Afripics
License: Licensed
Model Released: No
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