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Pantosteus Plebeius
The Rio Grande sucker (''Pantosteus plebeius'') is a North American freshwater fish in the family Catostomidae. It has a typical bottom-feeding phenotype and fills lower trophic levels alongside Rio Grande cutthroat trout and Rio Grande chub species. It is smaller sized in comparison to its other family members, with females being the larger between sexes. Coloration tends to benefit the species due to counter-shading patterns. It is endemic to the Rio Grande basin and was once common throughout. The species has maintained a population in New Mexico, Colorado, Arizona, and Northern Mexico, but has faced challenges from the pressure of non-native species, habitat loss, degradation, and a variety of other aquatic ecosystem changes. There is current pressure from environmental organizations to federally list the species as threatened or endangered. Formerly placed in the genus ''Catostomus'', it is now placed in the genus ''Pantosteus''. Taxonomy The scientific name of the Rio G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catostomus Bernardini
''Catostomus'' is a genus of fish belonging to the family Catostomidae, commonly known as suckers. This genus of fish usually lives in freshwater basins. Most members of the genus are native to North America, but '' C. catostomus'' is also found in Russia. A majority of species inhabit western North America, with only ''C. catostomus'', ''C. commersonii'', and ''C. utawana'' being found in eastern North America. Characteristics The members of this genus have nearly cylindrical bodies. They have large, horizontal mouths, and their lips are very much papillose. They have complete lateral lines. They have from 54 to 124 scales, seven to 17 dorsal rays, usually seven anal rays, and 20 to 44 thin, unbranched rakers on their first gill arches. Their gas bladders have two chambers. The young of many of the species in the genus have three dark grey blotches along their sides. Hybridization Catostomus from different species of the genus are known to readily hybridize with each other ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
