...The spawning season is said to be from spring to early summer around Japan, but in Hawaii it is estimated to be January to February. Fish of this family have a special larval stage called tholichthys, which is shaped like a confetti candy. There are about 140 known species of butterflyfish, but 46 species in 7 genera have been recorded around Japan, including the stingray butterflyfish, ghost butterflyfish, chaetognathus, spearfish, and striped butterflyfish (all in the Chaetognathus genus), the scalyfish (illustration), the banded swordfish (illustration), and the spinner butterflyfish (illustration). ... *Some of the terminology that mentions "tholichthys" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…産卵期は日本の周辺では春から初夏とされているが,ハワイでは1~2月と推定されている。本科の魚類は金平糖のような形のトリクチスtholichthysという特別の幼生期をもつ。 チョウチョウウオ科は140種ほど知られているが,日本周辺ではトゲチョウチョウウオ,フウライチョウチョウウオ,チョウチョウウオ,チョウハン,ヤリカタギ,ミスジチョウチョウウオ(以上チョウチョウウオ属),フエヤッコダイ(イラスト),ハタタテダイ(イラスト),ハシナガチョウチョウウオ(イラスト)など7属46種が記録されている。… ※「tholichthys」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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