The fish show little diversity with only three species commonly occurring in all forest streams. All these species are endemic to the island. The Comb-tail (Belontia signata) with red tinted fins and tail is found slow moving streams. The Stone-sucker (Garra lamata ceylonensis) is found clinging to rocks where if feeds on moss and the striped loach (Neomachilus notostigma) is found among the leaf little at the bottom of streams.