Abstract Salmo trutta fario is the most important fish species of family Salmonidae inhibited in cool waters all over world including nortern parts Pakistan. This study was aimed to find out prey selection and feeding habits species. One hundred eighty five were captured from March 2016 April 2017. Feeding intensity as represented by a fullness index (FI), changing with various length groups se...

Sodium uptake rates were measured in wild and hatchery reared Norwegian brown trout (Salmo trutta) exposed to media of a range of pH. Sodium uptake was strongly dependent on external acidity, being reduced in media of low pH. Wild fish from the naturally acid R. Tovdal (S. Norway) were more tolerant of acid media than hatchery reared fish. The effects of increasing external sodium concentration...

Genetic variation in Scandinavian brown trout (Salmo trutta L.): evidence of distinct sympatric populations" (1976). Biological Sciences Faculty Publications. 347.

This thesis includes the following papers, which hereafter will be referred to by their roman numerals.