Elongated: body thick; snout broad and rounded; upper jaw longest: dorsal and anal with ten rays: pectorals, ventrals, and anal, pale red.
C. Cephalus, Linn. Syst. Nat. torn. i. p. 527. C. Jeses, Don. Brit. Fish. vol. v. pl. 115. Leuciscus Cephalus, Flem. Brit. An. p. 187. Chub or Chevin, Will. Hist. Pise. p. 255. tab. Q. 4. f. 2. Chub, Penn. Brit. Zool. vol. iii. p. 368. pl. 73. Id. (Edit. 1812). vol. iii. p. 485. pl. 84. Bowd. Brit. fr. wat. Fish. Draw. no. 6. Yarr. Brit. Fish. vol. i. p. 358.
From sixteen to eighteen inches.
(Form). Oblong-oval, elongated, and subcylindrical: greatest depth contained four times and a half in the entire length; thickness two-thirds of the depth: dorsal line continuous with the profile and nearly straight; ventral rather more convex: head one-fifth of the entire length: snout broad and rounded: gape large; upper jaw projecting beyond the lower: eyes rather small; the space between them flat, equalling three times their diameter: nostrils large: lateral line descending, following the curve of the ventral line at about two-thirds of the depth: scales large; the free portion finely striated across, with six or eight diverging radii from the centre; the basal with finer and more numerous diverging radii, the margin lobed; number in the lateral line forty-five; above it seven and a half; beneath three and a half: dorsal commencing about the middle of the back; second ray longest, equalling two-thirds of the depth: anal similar to the dorsal, commencing in a line with the tip of that fin when folded down: caudal forked for nearly half its length: pectorals and ventrals much as in the Roach; the latter a very little in advance of the first ray of the dorsal, and having a narrow elongated pointed scale in their axilla:
B. 3; D. 10; A. 10; C. 19, etc.; P. 19; V. 9,
(Colours). Back dusky green; the sides and belly silvery: lateral scales with the free portion dotted with black: cheeks and gill-covers with gold reflections: irides pale yellow, almost white: dorsal and caudal fins dusky; pectorals pale; anal and ventrals tinged with red, with the exception of two or three of the last rays.
Found principally in rivers. Lurks in holes and near the roots of trees. Food, insects, worms, and the young of other fish. Spawns in April and May. Attains to a weight of four or five pounds, sometimes more. Obs. The C. Jeses of Linnaeus and Bloch, and which this last author supposes to be the Chub of Pennant, is evidently distinct from this species, and has not hitherto been identified as a native of Britain.