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・ Hemi-icosahedron
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・ Hemiaclis carolinensis
・ Hemiaclis georgiana
・ Hemiaclis incolorata
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Hemiancistrus
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・ Hemiandrus pallitarsis
・ Hemianopsia
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・ Hemianthus micranthemoides
・ Hemiarcha
・ Hemiarcha bleptodes
・ Hemiarcha caliginosa
・ Hemiarcha macroplaca
・ Hemiarcha melanogastra
・ Hemiarcha metableta
・ Hemiarcha polioleuca


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Hemiancistrus : ウィキペディア英語版
Hemiancistrus

''Hemiancistrus'' is a genus of suckermouth armored catfishes. These species are native to South America.〔Bussing, W.A. (1998). ''Freshwater fishes of Costa Rica.'' Pp. 160-162. ISBN 978-9977-67-489-6.〕 The taxonomy of this genus is complex and unclear, and major work has to be done. Many of these fish are popular aquarium fish.
==Taxonomy==
''Hemiancistrus'' is a genus within the tribe Ancistrini of the subfamily Hypostominae. This genus has long been used as a sort of dump for Loricariid species; fish with unclear relationships have been classified to this genus. As such, this taxon is not monophyletic.〔 At this point, many undescribed species remain.〔
This genus and the closely related ''Peckoltia'' may be synonymous, as neither genus is supported by synapomorphies. ''Hemiancistrus'' species differ from other members of the ''Panaque'' clade lacking the synapomorphies of the other genera and having the dentaries meeting at an angle greater than 120°; in ''Peckoltia'' species, the dentaries meet at less than 90°〔 Generally, ''Peckoltia'' are considered to be those that have dorsal saddles and bands in the fins, while ''Heminancistrus'' have spots and uniform coloration.
What species belong to this genus has been unclear. Many newer species have been tentatively assigned to ''Hemiancistrus''.〔〔 Although the recently described ''H. micrommatos'' and ''H. spinosissimus'' have been considered synonyms of ''H. spilomma'' by Armbruster, they have more recently been considered valid.〔 ''H. micrommatos'', ''H. spinosissimus'' and ''H. spilomma'' are placed in the genus ''Ancistomus''.〔 ''Hemiancistrus medians'' is larger than most species that were left in ''Hemiancistrus'', has well-developed keels (only present elsewhere in ‘H.’ landoni), and a different body shape. The remainder of the taxa that do not have established genera that they can be placed in will be recognized as species groups in ''‘Hemiancistrus’'' in single quotes until they can be examined further.〔

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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