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Pacific ladyfish
The Pacific ladyfish, also known as the Pacific tenpounder and Machete (''Elops affinis'') is a species of fish in the genus ''Elops'', the only genus in the monotypic family Elopidae. The Pacific ladyfish can be found throughout the entire southwest USA, and other areas in the Pacific Ocean.〔Battaso, R. H. and J. N. Young. (1999). Evidence for freshwater spawning by striped mullet and return of Pacific tenpounder in the lower Colorado River. California Fish & Game. 85(2): pp 75-76.〕〔Eschmeyer, W.N., et al. ''A Field Guide to Pacific Coast Fishes of North America''. Houghton Miffin Company, Boston, USA. 1983. page 336.〕〔Forey, P. L. (1973). A revision of the elopiform fishes, fossil and recent. ''Bulletin of the British Museum of Natural History'' (Geology) Supplement 10. pp. 222.〕〔Froese, R. and D. Pauly, Editors. 2002. (''Elops affinis''. ) FishBase. 24 September 2002.〕〔Minckley, W. L. 1973. Fishes of Arizona. Arizona Game and Fish Department, Phoenix. pp. 46-47.〕〔Nelson, J. S. ''Fishes of the World''. Wiley-Interscience Publication, John Wiley and Sons. 1984. pp. 523.〕〔Nelson, J. S. ''Fishes of the World''. John Wiley and Sons, Inc. New York. 1994. pp. 99, 100.〕
== Description ==
The pacific ladyfish have very round bodies with terminal mouths, and profound gill formations known as pseudobranchiae. They have a larger number of dorsal fin rays than most Arizona fish,〔 with numbers ranging from 27 to 35. Anal fin rays usually range from 13 to 19, and they have 12 to 16 pelvic rays. This species is very different from most chordates in that it has no conus arteriosus, a tendinous band of tissue from which the pulmonary artery arises. Because of this absence, they have a much smaller pulmonary artery. This fish's lateral lines are unbranched, and lateral line scales are usually within ranges of 95 to 120. All scales are silvery and cycloid, along with the overall color of the fish; however, yellow pigment can occur in the eyes. Some aids to identification include the prominent auxiliary and inguinal processes.〔
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