Fishing Wales: Flies + Hatches - Fishing Visit Wales

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Hatches to expect and flies to use when fishing For Wild Brown Trout in Wales

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Black Gnat

March heralds the start of trout fishing, in celebration the March Browns hatch together with the large dark olives and can provide memorable sport early in the season. As the season progresses so do the variety of upwinged flies that hatch (Mayflies, Iron Blue, Medium Olives). Female Upwings return to the river to lay their eggs (spinners), a fact, which is not lost on the trout.

A general rule with the upwinged, the colder the day, the darker the fly.
These flies together with the, Sedge, Stoneflies and Flat Wing (Black Gnat, Hawthorn, Midges) are of major importance. The nymphs of these flies contribute substantially to the trout’s diet, from the stone clinging March Brown to the agile darters of the Olives and the house building Sedge. These and the freshwater shrimp are all eaten with relish.
There is one other important group, the terrestrials, which include Beetles, Crane Fly. Ants and the Black Gnat.

The upland lakes are late starters and start fishing a month or so after their lowland cousins.

With artificial flies there are three schools, the exact imitation, the impressionists and those who fish with only a handful of general imitations. Successful anglers are found in all three.