. Cassell's natural history. Animals; Animal behavior. THE ROACH. 129 cliiefly from luilia, ami tlie Indian Archipelago. One or two gouera like , from China, and Amblypharyngodon, have the lateral line incomplete. Some species of the genus Rasbora hine barbels, though nearly all are without them. The sixth gi-oup, named Semiplotina, includes the genera Cyprinion, from Syria and Persia, and Semiplotus, from Assam. The dorsal fin in these fishes is elongated, with an osseous ray and many-branched lays. The seventh group, termed Xenocypridina, has an osseous ray in tlie dorsal tin, b
. Cassell's natural history. Animals; Animal behavior. THE ROACH. 129 cliiefly from luilia, ami tlie Indian Archipelago. One or two gouera like , from China, and Amblypharyngodon, have the lateral line incomplete. Some species of the genus Rasbora hine barbels, though nearly all are without them. The sixth gi-oup, named Semiplotina, includes the genera Cyprinion, from Syria and Persia, and Semiplotus, from Assam. The dorsal fin in these fishes is elongated, with an osseous ray and many-branched lays. The seventh group, termed Xenocypridina, has an osseous ray in tlie dorsal tin, but the fin short. Two of the genera are from China, and the third from the west coast of Sumatra. The eighth group has the dorsal fin short, as in the preceding group, but the osseous ray is It is named Leuciscina. The genus Leuciscus comprises the gi-eater part of ;» hundred species, which are widely distriljutetl in both tlie Old World and America. In this genus the body is. covered with imbricated scales. There are no barbels. The pharyngeal teeth are in a single or double series, and the intestine is short, with a few convolutions. The Roach (Leuciscus nUUus) belongs to the Old World section of the genus with the teeth in single series. It is found throughout Europe in all the countries north of the Alps. The body is somewhat elevated, of a silvery aspect, and has three longitudinal rows of scales between the lateral line and the ventral fin. In the full-gi-own fish the lower fins have a red colour. Its usual length is ten inches, but large specimens may measure as much as fifteen inches. The large scales are easily detached ; the latei-al line has a downward curve. The mouth is small. The Roach is a gregarious fish, swimming in large .schools, and as the repro- ductive season approaches they make a short migration, lea-ving the lakes or main streams to ascend the tributaries, and at such times are taken in great numbers. Their eggs furnish food for the Trout.
Size: 1968px × 1269px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjecta, booksubjectanimals
