This species grows to a length of up to 22cm. Historically it was most common in coastal drainages between Sydney and Adelaide. Although some have been found in the Murray Darling System- these are suspected to have 'emigrated' there via the Snowy River power system, which diverts water west from the Snowy River to the Murray River.

Was once abundant in coastal drainages including South Australia's Gulf streams. Habitat degradation has greatly reduced its range, yet it can still be found in the Gulf streams.

The Climbing galaxias is a secretive species that usually inhabits clear, headwater streams. It is a highly migratory species, and is known for its ability to climb virtually vertical rock faces so long as they are moist. Consequently, this species has the capacity to recolonise habitats following the removal of threats. Unfortunately, such migratory behaviour makes this species vulnerable to predation by other fish such as trout.

Apart from habitat degradation, primary threat is from predation by introduced fish, mainly Rainbow trout (Oncorhynchus mykiss) and from direct competition with Brown trout (Salmo trutta).