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Magosternarchus : ウィキペディア英語版 | Magosternarchus
''Magosternarchus'' is a genus of weakly electric knifefish in the family Apteronotidae, containing two species. They are endemic to Brazil, occurring in large river channels in the Amazon River basin. Both species are unusual benthic predators that specialize in biting off the tails of other knifefishes, and are characterized by their greatly enlarged jaws and teeth. ==Taxonomy== The name ''Magosternarchus'' honors Dr. Francisco Mago Leccia, who has made many contributions to the study of gymnotiform knifefishes; the latter part of the name ''sternarchus'' is from the Greek ''sternon'' ("chest") and ''archos'' ("rectum"), referring to the forward placement of the urogenital opening in this group of fishes. The species name of ''M. raptor'' is from the Latin for "plunderer", referring to its tail-eating habits; the species name of ''M. duccis'' refers to the Duke University Center for Creative Ichthyology (DUCCIS), an ichthyology club. Based on several shared skeletal traits, the closest relative of ''Magnosternarchus'' is believed to be the genus ''Sternarchella''.
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