Difference between Rainbow and Sea Trout

Roughly speaking, one can say that the rainbow trout is a freshwater fish, while the sea trout lives mainly in salt water.

The rainbow trout (Oncorhynchus mykiss) is a species of salmonid. It is native only to the rivers and lakes of North America, west of the Rocky Mountains, and of the tributaries of the Pacific Ocean in Asia. Its value as a hard-fighting game and delicious fish, however, has led to its introduction in freshwater bodies around the world. 

The sea trout (Salmo trutta morpha trutta) shows anadromous reproduction, meaning it migrates to the oceans for much of its life and returns to freshwater only to spawn, like the salmon.

Sea trout in the UK and Ireland have many regional names including sewin (Wales), finnock (Scotland), mort (North West England) and white trout (Ireland).

Trout make for a very tasty meal, as simple and easy or as sophisticated as you like. It is rich in Omega-3 oils and low in calories, and contains vitamins A and D. So give our recipes – like this one – a try and taste it for yourself!