They are very opportunistic when it comes to food, I suppose it fits in with a nomadic life style, Around here they use the canal and river systems like we do roads. These canals are full of signal crays so are the easiest food source for otters but not necessarily there only food source, A small pond on a local farm had a couple of dozen Grass Carp in it, They had been in there since before i was a kid, It is quite close to the canal, Otters found it the other year and took every single fish in there over a two week period, Now this pond was small and only about 3ft at its deepest. The otte