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The tadpole-gobies〔 (''Benthophilus''), also called pugolovkas (which means "tadpole" in Ukrainian), are a genus of Ponto-Caspian fishes in the family Gobiidae. They are distributed in the fresh and brackish waters of basins of the Black Sea, Caspian Sea and the Sea of Azov, up to salinities of about 20 ‰. They typically live in habitats such as the deep waters of the Caspian (salinity about 13 ‰) and in the deltas, estuaries and coastal waters of the Ponto-Caspian.〔 Tadpole-gobies are small fish, never larger than 15 cm, and usually smaller. Their life span is about one year. After spawning they die.〔 ==Species== There are currently 20 recognized species in this genus:〔Boldyrev V.S., Bogutskaya N.G. (2007) Revision of the tadpole-gobies of the genus ''Benthophilus'' (Teleostei: Gobiidae). Ichthyol. Explor. Freshwaters, 18(1): 31-96.[http://www.pfeil-verlag.de/04biol/pdf/ief18_1_04.pdf [First page]]〕 * ''Benthophilus abdurahmanovi'' Ragimov, 1978 (Abdurahmanov's pugolovka) * ''Benthophilus baeri'' Kessler, 1877 (Baer pugolovka) * ''Benthophilus casachicus'' Ragimov, 1978 * ''Benthophilus ctenolepidus'' Kessler, 1877 * ''Benthophilus durrelli'' Boldyrev & Bogutskaya, 2004 (Don tadpole-goby) * ''Benthophilus granulosus'' Kessler, 1877 (Granular pugolovka) * ''Benthophilus grimmi'' Kessler, 1877 * ''Benthophilus kessleri'' L. S. Berg, 1927 * ''Benthophilus leobergius'' L. S. Berg, 1949 (Caspian stellate tadpole-goby) * ''Benthophilus leptocephalus'' Kessler, 1877 * ''Benthophilus leptorhynchus'' Kessler, 1877 (Short-snout pugolovka) * ''Benthophilus macrocephalus'' (Pallas, 1787) (Caspian tadpole goby) * ''Benthophilus magistri'' Iljin, 1927 (Azov tadpole goby) * ''Benthophilus mahmudbejovi'' Ragimov, 1976 (Small-spine tadpole-goby) * ''Benthophilus nudus'' L. S. Berg, 1898 (Black Sea tadpole-goby) * ''Benthophilus pinchuki'' Ragimov, 1982 * ''Benthophilus ragimovi'' 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「Tadpole goby」の詳細全文を読む スポンサード リンク
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