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Granular pugolovka
The granular pugolovka (''Benthophilus granulosus'') is a species of gobiid fish widespread in the Caspian Sea.〔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.()〕 Pugolovka is a Ukrainian word for tadpole.〔(【引用サイトリンク】url=https://en.wikipedia.org/wiki/Tadpole_goby )〕 ''Benthophilus granulosus'' is a subspecies of the Goby family, however they are identified as a subspecies due to the lacking of a swim bladder. Another characteristic used to identify ''Benthophilus granulosus'' as a subspecies is the location of the dorsal fins which is talked about later in the description section.〔(【引用サイトリンク】url=https://en.wikipedia.org/wiki/Goby#Benthophilinae )〕 It is a small fish, with a length up to TL. It was listed as Least Concern by the IUCN in 2008: there are no known major threats.〔 This species of fish was discovered in 1877 by Karl Kessler in the Caspian basin.〔(【引用サイトリンク】title=A brief history of the study of fishes of the Caspian Sea and scientific results of the Caspian Expedition of 1904 headed by N. M. Knipovich )〕 Granular pugolovka is very abundant in their habitat due to their size and lack of natural predators. Granular pugolovka is a member of the Goby family. they are characterized by disc shaped suckers and fins that are described as pelvic fins. The sucker is used to latch onto coral and rocks when observed in a captivity setting〔(【引用サイトリンク】url=https://en.wikipedia.org/wiki/Goby#Description )〕
==Description==
''Benthophilus granulosus'' has a flat head with a flat barbel on the chin that is often described as being leathery.〔 The body colors depend on the habitat in which the fish lives. ''Benthophilus granulosus'' can be distinguished from its relatives by their body being covered in thorny granules which are closely compacted, containing three dark blotches on their midline. ''Benthophilus granulosus'' also has black dots on the head and back〔〔 Granular pugolovka starts its life cycle off as a tadpole, this tadpole stage of life is identified by the body of this fish and the absence of scales. The body of the tadpole stage also is covered with variable sized bony portions protruding out of the body, which will eventually disappear in only the males who have reached sexual maturity.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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