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''Hemigrammus ocellifer'' is a South American freshwater fish, also described by the synonyms ''Hemibrycon ocellifer'' and ''Tetragonopterus ocellifer''.〔(【引用サイトリンク】url=http://www.fishbase.org/Nomenclature/SynonymsList.php?ID=10645&SynCode=27877&GenusName=Hemigrammus&SpeciesName=ocellifer )〕 Common names include beacon fish, beacon tetra and head-and-taillight tetra.〔(【引用サイトリンク】url=http://www.fishbase.org/comnames/CommonNamesList.php?ID=10645&GenusName=Hemigrammus&SpeciesName=ocellifer&StockCode=10968 )〕 It is found in the rivers of Guyana, Suriname, French Guiana, and the Amazon Basin of Brazil and Peru. Most specimens offered for sale in the aquatics trade are tank-raised. It has a maximum size of ; the sexes are distinguished by mature females being fuller bodied. ==Care== Captive-raised specimens will acclimatise to a range of water conditions: pH should be 6-8; dH up to 18°; and temperature . A suitable species for planted community aquariums, beacon tetras should be kept in shoals of six or more and provided with floating plants to diffuse any bright lighting. Hiding places and open swimming areas should be available and consideration given to the colours of this fish showing best when they are housed in tanks with a dark substrate and background. 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「Head-and-taillight tetra」の詳細全文を読む スポンサード リンク
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