Eastern tubenose goby

Proterorhinus nasalis, the Eastern tubenose goby, is a species of goby native to fresh and brackish waters of the basins of the Sea of Azov and the Caspian Sea and has invaded the upper reaches of the Volga River from its native occurrence in the delta. This species prefers slow flowing rivers or still waters with plentiful rocks or vegetation. It...
Found on http://en.wikipedia.org/wiki/Eastern_tubenose_goby
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