Denariusa australis (Steindachner, 1867)
Pennyfish

Family:  Ambassidae (Asiatic glassfishes)
Max. size:  4.5 cm SL (male/unsexed)
Environment:  demersal; freshwater
Distribution:  Oceania: Australia and Papua New Guinea.
Diagnosis:  Dorsal spines (total): 8-8; Dorsal soft rays (total): 9-10; Anal spines: 3-3; Anal soft rays: 7-9
Biology:  Occurs in small, slow-flowing streams and swamps where there is dense aquatic vegetation (Ref. 5259, 44894). Tolerant of temperatures between 25° and 38°C, and a pH range of 4.5-8.1 (Ref. 44894). Feeds primarily on aquatic insects and micro-crustaceans (Ref. 5259, 44894). The smallest ambassid in Australia, with a life span of probably 2-3 years. Sexual maturity is attained at the end of the first year and breeding has been recorded in the wet season in flooded swampy lagoons (Ref. 44894).
IUCN Red List Status: Least Concern (LC); Date assessed: 12 February 2019 Ref. (130435)
Threat to humans:  harmless


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