翻訳と辞書 Words near each other ・ Red-banded hairstreak ・ Red-bearded bee-eater ・ Red-bellied black snake ・ Red-bellied fruit dove ・ Red-bellied gracile opossum ・ Red-bellied grackle ・ Red-bellied lemur ・ Red-bellied macaw ・ Red-bellied malimbe ・ Red-bellied marsupial shrew ・ Red-bellied mosaic-tailed rat ・ Red-bellied newt ・ Red-bellied pacu ・ Red-bellied paradise flycatcher ・ Red-bellied parrot ・ Red-bellied piranha ・ Red-bellied pitta ・ Red-bellied racer ・ Red-bellied short-necked turtle ・ Red-bellied squirrel ・ Red-bellied titi ・ Red-bellied turtle ・ Red-bellied woodpecker ・ Red-berry mistletoe ・ Red-billed blue magpie ・ Red-billed brushturkey ・ Red-billed buffalo weaver ・ Red-billed chough ・ Red-billed curassow ・ Red-billed dwarf hornbill Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Red-bellied piranha ： ウィキペディア英語版 Red-bellied piranha The red-bellied piranha or red piranha (''Pygocentrus nattereri'') is a species of piranha native to South America, found in the Amazon River Basin, coastal rivers of northeastern Brazil, and the basins of the Paraguay and Paraná.〔(【引用サイトリンク】title=Animal Diversity Web: Pygocentrus nattereri )〕 They are omnivorous foragers and feed on insects, worms, crustaceans and fish. They are not a migratory species, but do travel to seek out conditions conducive to breeding and spawning during periods of increased rainfall. Red-bellied piranhas often travel in shoals as a predatory defense, but rarely exhibit group hunting behavior. Acoustic communication is common, and is sometimes exhibited along with aggressive behaviors. At this time, the red-bellied piranha is not considered to be a threatened species by the IUCN, and therefore, there are no conservation strategies in place to target this species. Through media influence, the red-bellied piranha has developed a reputation as a ferocious predator, though this is not actually the case. They are a popular aquarium fish. ==Taxonomy and phylogeny== The red-bellied piranha belongs to the subfamily Serrasalminae, which is a group of medium to large-sized characids and includes other closely related omnivores such as pacus.〔(Black-finned Pacu Fish, Colossoma macropomum Profile with care, maintenance requirements and breeding information for your tropical fish ). Badmanstropicalfish.com. Retrieved on 2012-05-13.〕 They are characterized by deep, lateral compressed bodies and long dorsal fins. Within the subfamily, red-bellied piranhas fall into the genera Pygocentrus, which is distinguished by the unusual dentition and differing head width dimensions. The red-bellied piranha is considered to be highly carnivorous, while most non-piranhas in the family are primarily herbivorous. However, it should be noted that red-bellied piranha is actually omnivorous.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Red-bellied piranha」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.