Gillaroo

Article summary

The gillaroo (Salmo stomachicus; historically included in ) is a species of trout which eats primarily snails and is only proven to inhabit Lough Melvin in Ireland. The name gillaroo is derived from the Irish for "red fellow" ( ); this is due to the fish's distinctive colouring. It has a bright, buttery golden colour in its flanks with bright crimson and vermilion spots. The gillaroo is characterised by these deep red spots and a "gizzard", which is used to aid the digestion of hard food items such as water snails. Experiments carried out by Queen's University Belfast established that the Lough Melvin fish are different from brown trout found anywhere else in the world. They feed almost exclusively on bottom living animals (snails, sedge fly larva and freshwater prawns) except during late summer. It is at this time that they come to surface to feed and may be caught on the dry fly. Other lakes reputed to contain the gillaroo are Loughs Neagh, Conn, Mask and Corrib. However the unique gene found in the Lough Melvin trout has not been found in some 200 trout populations in Ireland and Britain. It is therefore now recognised using its own original scientific name, rather than continued inclusion in the widespread , with which it had been synonymised.…

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