The list also includes some fish names that no longer exist in modern English, such as Frenches and lenbrood; these species are therefore unidentifiable.
[5] The 1641 list of 30 species (verbatim, note antique spelling of some names): Barbet, Bream, Bullhead, Burbolts, Carp, Chevin, Crayfish, Dates, Eel, Flounder, Frenches, Gudgeon, Grayling, Lampern, Lamphrey, Lenbrood, Loach, Minnows, Pickeral, Pinks, Perch, Roach, Ruff, Salmon, Shad, Smelt, Sticklebats, Sturgeon, Trout, Whitling.
The largest of these fish was the sturgeon, a species which at one time was fairly frequently caught in the Trent, but only in low numbers.
The fish that were caught most often, and were important to anglers, included barbel, bream, bleak, carp, chub, dace, eel, gudgeon, perch, and roach.
[10] Non-native species that had a sustainable population in the river were listed in 2007, and included the European bitterling (Rhodeus amarus), carp (Cyprinus carpio), and zander (Sander lucioperca).