| 翻訳と辞書 |
| Dwarf pufferfish ： ウィキペディア英語版 |
Dwarf pufferfish
The dwarf pufferfish (''Carinotetraodon travancoricus''), also known as the Malabar pufferfish (leading to easy confusion with the related ''C. imitator''), pea pufferfish or pygmy pufferfish, is a small, freshwater pufferfish endemic to the River Pamba in Kerala, Southwest India. The maximum documented size is 30 mm (less than 1.25 inches), making it one of the smallest pufferfish in the world. Although closely related to marine pufferfish, they are not found in brackish or salt water, and reports to the contrary may be based on misidentification.〔Schäfer F. Brackish Water Fishes, p 34. Aqualog 2005, ISBN 3-936027-82-X〕
==Description==
Sexing of juveniles is impossible because these fish "choose" their sex as they mature. Once one puffer begins becoming a male he excretes hormones to prevent the other puffers from becoming male. However, if two fish start to mature into males at the same time one will become the dominant male.There is also a dorsal crest, but it lacks special colouration when not erected. Both crests are displayed during courtship while the male circles the female. They also will have more yellow colouration.
Both sexes are primarily yellow with dark green to black iridescent patches on the flanks and dorsal surface, but as with other members of the genus, sexual dimorphism is apparent in mature fish, with males being more brightly coloured than females.〔 Males can also have a dark stripe down the center of their pale belly and iridescent "eye wrinkle" patterns that females do not have. Females are more rounded, tend to be a bit larger than males, and may or may not show more smallish spots between their larger dark markings.
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「Dwarf pufferfish」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.
|
|