| 翻訳と辞書 |
| Galaxias vulgaris ： ウィキペディア英語版 |
Common river galaxias
The common river galaxias or Canterbury galaxias (''Galaxias vulgaris'') is a galaxiid fish of the genus ''Galaxias'', found only in Canterbury, New Zealand.
==Description==
''Galaxias vulgaris'' are a small freshwater fish which usually grow to 100–115 mm in length. They have a large mouth with a somewhat undercut lower jaw, pinched nostrils and a rounded snout.〔McQueen, S. (2013). ''A Photographic Guide to Freshwater Fishes of New Zealand''. pp. 48–49. Auckland, New Zealand, New Holland. ISBN 1869663861〕 The fins are thick and fleshy. The pectoral fins are low and downturned. The caudal peduncle long and slender, the length of which is about 1.5 times the depth.〔
They are a speckled brown/grey/olive to match the gravel substrate in which they live and have highly variable black banding or blotching along their back.〔McDowall, R. M. (1990). ''New Zealand Freshwater Fishes: A natural history and guide''. pp. 133–117. Wellington, New Zealand, Heinemann Reed. ISBN 0790000229〕 This pigmentation is so effective as a camouflage, that it allows them to move out from the sanctuary under the rocks and spend time in the more open river in relative safety. They are easily confused with koaro which are slightly angled towards each other, but the eyes of ''G. vulgaris'' are larger and angled towards each other so the eyes are more visible when viewed from above.〔 ''Galaxias vulgaris'' can be further distinguished from other ''Galaxid'' species by its less dense mottled pigmentations, a slightly larger and wider body than other species.〔
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「Common river galaxias」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.
|
|