Protogobius attiti is a species of loach goby which is endemic to nine rivers in South Province, New Caledonia.

[1] It prefers areas where there is a gravel substrate under overhanging vegetation in slower reaches of fast flowing, clear streams.

When threatened it buries itself in the gravel leaving its eyes, mouth and first dorsal fin above the substrate.

Its main prey is small freshwater crustaceans, especially the abundant transparent shrimp which occur in these streams.

[2] It is threatened by nickel mining which creates sediments which blanker the rocks on which it hides and destroys the algae its prey feed on.