The Y-bar shrimpgoby (Cryptocentrus fasciatus) is a species of goby widespread in the Indo-West-Pacific from East Africa to Melanesia and the Great Barrier Reef.

This species can be found on reefs at depths of from 5 to 20 metres (16 to 66 ft) where they live in burrows in sandy substrates.

They are symbiotic with alpheid shrimps.

This species can reach a length of 14 centimetres (5.5 in) TL.

It can also be found in the aquarium trade.