Terapontidae

Drysdale grunter

Syncomistes rastellus

Grazing filamentous algae on rocks

• Tropical
• Coastal
• Local endemic species
• Transcontinental
• Freshwater fish
• Oceania
• Medium
• Tropical fish

The Drysdale grunter (Syncomistes rastellus) is a species of ray-finned fish in the family Terapontidae. It is endemic to Australia, where it occurs in the Gibb and Drysdale Rivers, coastal rivers in northern Western Australia. It is a herbivorous species which grazes on filamentous algae and prefers the main river channels rather than the tributaries, it also prefers flowing water of varying turbidity and substrate.