The main colouration is overlain with large blotchy darker makings usually merging into uneven bands, often overlaid with tiny dark grey spots.

The species preference for high velocity areas and its habit of hiding between rocks and pebbles on the stream bed together with its cryptic colouration appear to provide it with protection from predation.

Risks identified for the species include inundation (thus providing access to predators) and drying out of the riffle zones, due to river regulation.

Ripe to running-ripe adult fish have been collected in Corryong Creek (upper Murray) in early November and from the Acheron River (Goulburn R. catchment) in mid-October to mid-November.

[2] Juvenile fish have been observed in large loose shoals of more than fifty individuals moving upstream along the shallow edge of pools between riffle zones.