Minute teeth in both jaws: dorsal further back than in the Herring: ventrals beneath the middle of the dorsal: keel of the abdomen serrated: anal with sixteen rays.
C. alba, Yarr. in Zool. Journ. vol. iv. pp. 137, and 465. pl. 5. f. 2. C. latulus, Cuv. Reg. An. torn. ii. p. 318. White-Bait, Penn. Brit. Zool. vol. iii. p. 371. pl. 69. no. 176. Id. (Edit. 1812). vol. iii. p. 465. pl. 80.
Three to four inches, rarely four inches nine lines.
Body more compressed than in the Herring, the thickness being less than half the depth: abdominal serratures much sharper than in either the Herring or Sprat, but not so sharp as in the Shad, in which last species they are also of a different form: head one-fourth of the entire length: lower jaw longest: teeth very minute; those in the lower jaw confined to the extremity; upper jaw with the lower half of the maxillaries finely serrated: eyes large; their diameter nearly one-third the length of the head: lateral line distinctly marked, and straight: dorsal a very little further back than in the Herring †; ventrals immediately beneath it: number of fin-rays,
D. 19; A. 16; C. 19, &c; P. 16; V. 9.
Number of vertebrae fifty-six.
Supposed formerly to have been the young of the Shad ‡, but clearly proved by Mr. Yarrell to be a distinct species. Found only in the Thames, which river it ascends in April, sometimes as early as the end of March. Abundant throughout the Summer about Greenwich and Blackwall, but never found higher up the river than the locality last mentioned. Supposed to deposit its spawn during Winter. Swims near the surface. Food minute shrimps.