Black Francis

Asturian black salmon tube

SalmonMid-depth

An Asturian salmon tube fly — a black-dressed version of the Francis-style pattern, tied for the spate rivers of Cantabrian Spain. Dark, spare, and effective in the fast, often-coloured rivers of Asturias when visibility is limited.

Fish this when

In slightly coloured or dropping Asturian spate water when fish are running. Black tubes are the most visible option in peaty water and this pattern fishes well in medium flows.

Why it works

Black is the most visible colour in coloured or peaty water — it provides the sharpest contrast against a murky background. The Francis tube format swings well in the fast Cantabrian current.

Naturals it imitates