Diskussion:Moxostoma valenciennesi
Description
BearbeitenThis species of fish has small eye sockets in contrast to their large rounded skull. On either side of the greater redhorse's body are reddish gold pectoral fins and pelvic fins. The posterior part of the dorsal fin varies from slightly concave at youth to slightly convex in adulthood. Their tail fins are only slightly notched, a trait that usually evolved in slow swimming bottom-feeders. The greater redhorse is most easily identified by its bright rusty red colored tail fin and the rows of black spots along its sides and back.
Reproduction and Life CycleSpawning for the greater redhorse begins in May or June. Before they are able to build their gravel and sand nests, they locate an area in moderately fast waters. Once male territories are established, the females will visit two males at a time and begin their spawning process. The two males will surround the female and perform a shaking motion releasing both the sperm and eggs from said gendered fish. Upon burial of the eggs, the parents leave with no further parental care provided. Following fertilization, the greater redhorse eggs will hatch six to eight days at a mean temperature of 19°C. Growth rates of this species are controversial among various areas they inhabit.
Eine Eizelle kann doch nur einmal befruchtet werden. Ist nicht richtig wiedergegeben. Gruss, --Graf zu Pappenheim (Diskussion) 06:03, 24. Dez. 2012 (CET)