Ferox trout (Salmo ferox) is a variety of trout found in oligotrophic lakes/lochs of Ireland, England, Scotland and Wales. Ferox trout is a traditional name for large, piscivorous trout, which in Scotland feed largely on Arctic char. It has been argued to be a distinct species, being reproductively isolated from "normal" brown trout (Salmo trutta) of the same lakes, particularly in Ireland.[1] However, it is uncertain whether the ferox of different lakes are all of a single origin.[1] This fish grows to a length of 80 centimetres (31 in) SL.[2]
| Ferox trout | |
|---|---|
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Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Salmoniformes |
| Family: | Salmonidae |
| Genus: | Salmo |
| Species: | S. ferox |
| Binomial name | |
| Salmo ferox Jardine, 1835 | |
Scottish authorities currently do not regard Scottish ferox to be taxonomically distinct from Salmo trutta.[3]