Large Dark Olive (Baetis rhodani) Subimago/Dun Paradun
It is the end of February, and the start of the new trout season in Wales is just six days away. Focus from most of the fishing community is currently on the upcoming voluminous hatches of the March Brown (Rhithrogena germanica) and Grannom (Brachycentrus subnubilis), however, there is one invertebrate…