..The fishes of Illinois . ch opercle, and a row on the margin of most of the scaleson the upper part of the caudal peduncle. Reighard has seen amale of this species preparing a nest by excavating the sand andgravel in advance of spawning, but this is abandoned after the eggshave been laid. *The eastern chub (Semotilus corporalis) does not occur west of the Alle-ghanies. It is said by Atkins to spawn in May. It builds great heaps of gravelin running water, but avoids eddies and ripples when spawning. The malesbuild the nest, carrying pebbles in their mouths. 124 FISHES OF ILLINOIS Genus OPSOPC
..The fishes of Illinois . ch opercle, and a row on the margin of most of the scaleson the upper part of the caudal peduncle. Reighard has seen amale of this species preparing a nest by excavating the sand andgravel in advance of spawning, but this is abandoned after the eggshave been laid. *The eastern chub (Semotilus corporalis) does not occur west of the Alle-ghanies. It is said by Atkins to spawn in May. It builds great heaps of gravelin running water, but avoids eddies and ripples when spawning. The malesbuild the nest, carrying pebbles in their mouths. 124 FISHES OF ILLINOIS Genus OPSOPCEODUS Hay Body fusiform, somewhat compressed; mouth extremely small,terminal; upper jaw protractile; no barbels; teeth 5-5 or 4-5, withedges serrated and no grinding surface, the tips hooked; intestine short;peritoneum white; dorsal rays 7 to 10; anal rays 7 or 8; scales 37 to 42;lateral line complete or imperfect. Size very small, 2\ inches. or 4; confined to the Mississippi Valley and the eastern United Fig. 27 OPSOPCEODUS EMILLE Hay Hay, 1880, Proc. U. S. Xat. Mus., S07. .Forbes in J. &&., 247 (Trycherodon megalops); M. V., 68; J. & E., I, 24S (megalops);F., 74; L., IS (emiliae and megalops). The very small and upturned mouth, the black spot on the posteriorxays of the dorsal fin, and the incomplete lateral line of this species serveto distinguish it readily from all other minnows found in our usually less than 2\ inches; body moderately elongate, com-pressed, the back perceptibly elevated, the profile a more or less evenincline from a point over the tips of the reflexed pectorals; depth in length; caudal peduncle slender, longer than head, its depth in its length, not usually, however, over Color light olive,yellowish, the scales except on and very near belly conspicuously dark-edged;* a narrow dark lateral band, extending forward across opercleand through eye to end of snout, becoming faint anteriorly; no distinctcau
Size: 3191px × 783px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookidcu31924, booksubjectfishes
