It is widely recognised that Brown Trout and Sea Trout are the same species (Salmo Trutta). As the season progresses and spawning ready fish “colour up”, it makes identifying which is which increasingly difficult for anglers. The best advice here if there is any doubt, is always to treat all coloured fish at this time of year as ready to spawn and return them quickly and safely to the river (no time for photos) to do what they do naturally.