Sometimes when angling, I get the sense that not all fish are the same, even when they’re the same species, seem to be the same size, appear to be the same sex, and have been caught within the same hour of the same fishing excursion. For example, one fish is particularly feisty, and a real treat to bring in, while others have very little fight and kind of make me think I’ve caught a ‘log bass’ (aka, snag). A recent study suggests it may not be my imagination playing ticks on me. Researchers from the University of Eastern Finland (Härkönen et al. 2014) have found evidence that not all brown trout of the same age class and sex behave the same.