Abstract
Gammogobius steinitzi Bath, 1971, a goby species endemic to the Mediterranean Sea, was observed for the first time in the Black Sea in marine caves of western Crimea (Tarkhankut, Ukraine). A description of the morphological and ecological characteristics is given on the basis of the analyses of 5 specimens. The morphological and ecological characteristics of the Black Sea specimens do not differ from the Mediterranean ones.
Highlights
Gobiidae is one of the most numerous families of the Black Sea (Kovtun and Pronin 2011, Kovtun 2012) and order Perciformes
Gobiids are distributed in tropical the Black Sea but their presence was considered doubtful and temperate latitudes of the northern and southern (Manilo 2008–2009, Kovtun 2013)
The longitudinal papillae row d is intermittent, its anterior part d1 is located along the rear edge of the upper lip, the posterior part of d2 ends before the lateral infraorbital row 6i
Summary
The location and proper labelling of the cephalic lateral line canals with pores of small and large, transverse and longitudinal genipore rows, were presented in accordance with the work of Sanzo (1911) and Miller (1986). The longitudinal papillae row d is intermittent, its anterior part d1 is located along the rear edge of the upper lip, the posterior part of d2 ends before the lateral infraorbital row 6i. The Black Sea specimens have a bigger overall size, which distinguishes them from the fish from the northern part of the Mediterranean Sea and the Adriatic (TL, SL) The base of their first dorsal fin lD1 is considerably longer. The length of the latter is somewhat longer than in specimens from the Mediterranean This fact draws attention to the relative width of the head wc of the Black Sea fish. Body proportions and meristic characters of Gammogobius steinitzi from different habitats in the Mediterranean-, Adriatic-, and Black Seas
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