At the upstream ends there were sections with fuscus and no trout. Examination of the gut contents of trout from this zone found that G. fuscus were being heavily predated. Clearly, as the trout were migrating into these areas, they were exterminating the galaxias. Reproduction Not known, assumed to be similar to inland populations of Galaxias olidus . Diet Feeds in a similar manner to trout on a wide range of aquatic invertebrates, predominantly insects but also molluscs, crustaceans and annelids as well as terrestrial insects from the water surface.
Larger fish take proportionately more terrestrial insects.
In the aquarium Would probably make an easily kept aquarium fish, like G. olidus , but is not available from the aquarium trade and, due to its endangered status, capture from the wild is not an option. Perhaps one day, if the fish is able to make a comeback, this attractive fish might become available to aquarists.