Neogobius pallasi, the Caspian sand goby[2] or the Caspian monkey goby,[2] is a species of fish native to fresh and brackish waters of the Caspian Sea basin including the Volga drainage up to the vicinity of Moscow.

This species of goby can reach a length of 20 centimetres (7.9 in) SL.

It is also important to local commercial fisheries.

[2] Earlier it was considered as the Caspian subspecies of the Monkey goby, N. fluviatilis pallasi, but is now considered a full species in its own right.

[3] The specific name honours the naturalist and explorer Peter Simon Pallas (1741-1811) whose posthumous description of this taxon was published in 1814.