| 翻訳と辞書 |
| Ponticola kessleri ： ウィキペディア英語版 |
Ponticola kessleri
''Ponticola kessleri'', the bighead goby or Kessler's goby, is a species of goby native to Eurasia. The bighead goby is a Ponto-Caspian relict species. It inhabits the fresh and oligohaline waters, with mineralisation from 0-0.5‰ up to 1.5-3.0‰.
==Characteristics==
This species has a big flattened head, strongly expended upper lip, prolonged-conical body and thickened anterior. The mandibula is longer than maxilla. It reaches . A triangular dark spot is visible near the caudal fin. The collar of its abdominal sucker has blades. The sucker does not reach the anus. It is red- or grey-brown with 5 transverse lines on the back, one of which is on the basis of the caudal fin. The head has light round spots with a white margin on sides. The basis of the pectoral fin has wave-shaped brown spots, odd fins have lines of black spots.
This species is distinguished from related Black Sea basin inhabitants by the following: 75-95% of its length is between its origin and anus; ctenoid scales completely cover the predorsal area and nape; pelvic disc fraenum with angular lobes, Distinguishing characteristics include a fraenum with length 1/6-1/2 of its width at base, midlateral series scales 68-72 +3-4, a snout length 1.5-2.0 times its eye diameter, that its first branched ray of second dorsal is about as long as penultimate ray and that the posterior part of first dorsal is without a black spot.
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「Ponticola kessleri」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.
|
|