Elongated; depth rather more than one-fifth of the length: upper jaw longest: dorsal with ten rays: anal, pectorals, and ventrals, pale: irides yellowish.
C. Leuciscus, Linn. Syst. Nat. torn. i. p. 528. Bloch, Ichth. pl. 97. Don. Brit. Fish. vol. iv. pl. 77. Turt. Brit. Faun. p. 109. Leuciscus vulgaris, Flem. Brit. An. p. 187. Dace, Will. Hist. Pise. p. 260. tab. Q. 10. f. 3. Penn. Brit. Zool. vol iii. p. 366. Id. (Edit. 1812). vol. iii. p. 483. Bowd. Brit. fr. wat. Fish. Draw. no. 11. Yarr. Brit. Fish. vol. i. p. 353. La Vandoise, Cuv. Reg. An. torn. ii. p. 275.
From eight to ten inches; sometimes more.
(Form). More elongated than the Roach; the back but slightly elevated: greatest depth one-fourth of the entire length, excluding caudal; thickness half the depth: dorsal line continuous with the profile, and deviating but little from a straight line: head small; one-fifth of the entire length, measured quite to the extremity of the longest caudal rays: snout rather acute, viewed laterally, but somewhat rounded when viewed from above; upper jaw projecting beyond the lower: eyes moderate; distant from the end of the snout a little more than the length of their diameter; the distance from one to the other scarcely more than one diameter and a half: lateral line slightly descending; its course, beneath the commencement of the dorsal, at just two-thirds of the depth: scales smaller than in the Roach, with the radiating striae posteriorly finer and more numerous; number in the lateral line fifty-one; above it eight and a half; beneath four and a half: dorsal commencing a little behind the middle point between the extremity of the snout and the base of the caudal; second ray longest, equalling rather more than two-thirds of the depth: anal similar to the dorsal, commencing in a line with the tip of that fin when folded back: caudal deeply forked: pectorals and ventrals as in the Roach, the latter a very little in advance of the first ray of the dorsal:
D. 10; A. 11; C. 19, &c; P. 16; V. 9.
(Colours). Upper part of the head and back dusky, with a bluish cast; this last tint terminating at about one-third of the depth by a tolerably well-defined hue: sides beneath, and belly, silvery: dorsal and caudal fins dusky; pectorals, ventrals, and anal, very pale red: irides yellowish.
Common in deep rivers and other clear waters, but not so plentiful as the Roach. Is gregarious. According to Bloch, spawns in June, but according to other authors in February and March. Is very prolific, and multiplies fast. Seldom attains to the weight of a pound, though Pennant mentions one which weighed a pound and a half. Is sometimes called a Dare.