Galaxias brevipinnis Günther, 1866
Koaro
Hawai,  Koaro,  Taiwharu
Galaxias brevipinnis
photo by Bursell, J.J.

Family:  Galaxiidae (Galaxiids), subfamily: Galaxiinae
Max. size:  28 cm SL (male/unsexed)
Environment:  benthopelagic; freshwater; brackish; marine, amphidromous
Distribution:  Oceania: found in southeastern Australia in streams draining east and south from the Great Dividing Range; Flinders and King Islands in Bass Strait; widespread in Tasmania; also in New Zealand and the Chatham, Auckland and Campbell Islands.
Diagnosis:   
Biology:  Inhabits mainly clear streams, often deeply shaded and relatively fast-flowing, although it sometimes occurs in lakes, particularly in Tasmania. In New Zealand and parts of Tasmania, juveniles occur in marine waters, presumably the larvae are washed out to the sea. The existence of a marine stage is regarded to be facultative rather than obligatory in Australia. Swims near the bottom, usually around the cover of rocks and logs. More common in uploads (Snowy Mountains, Otway Ranges, central Tasmania) than at lower elevations (Ref. 44894).
IUCN Red List Status: Least Concern (LC); Date assessed: 12 February 2019 Ref. (130435)
Threat to humans:  harmless
Country info:  Found in Chathams Island (Ref. 45493). Also native to Lake Taupo (Ref. 32720, 42662). Range extension above artificial impoundments. Water diversion raceways have introduced the species leading to exclusion, hybridization and loss of genetic diversity (Ref. 52336). Voucher specimen(s) held at the NMNZ (Ref. 5755).


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