Scad
Trachurus trachurus · Mackerel, garfish and shoal fish
Also called horse mackerel

Also called horse mackerel, a silvery shoaling fish of open water that UK anglers catch on small baits and feathers, often among mackerel.[1]
How to recognise it
When and where
Sources
These notes are a draft: we gathered them from the sources above and are still checking them. We don't work out best times for this fish yet. The size rules come from the same checked byelaws as every other fish.