Larvae school at the surface for around a month. Swimming and feeding commences after 4-5 days (up to 9 days). Larvae hatch after 5-7 days at 22✬ at a length of 3 mmTL. Spawning occurs from September to December amongst aquatic vegetation in water temperatures between 23-25 C. Females lay small adhesive spherical eggs (0.7 mm diameter) that attach to aquatic vegetation and rocks on the bottom. The entire life cycle is completed in freshwater, and males and females mature at 1 year of age. Olive to semi-transparent with dusky scale margins forming a network pattern a thin black line along middle of side, particularly evident on posterior half fins mainly translucent except membrane between second and third dorsal-fin spines frequently blackish, and often a dusky, blackish blotch or vertical band on posterior portion of soft dorsal and anal fins, and similar marking on anterior part of pelvic fins.įeeds on mostly on small insects and crustaceans. Scales are cycloid and large, present on head horizontal scale rows 10-12 vertical scale rows 24-27 cheek with 2 transverse scale rows.ĭorsal fin deeply notched, origin forward of pelvic fins first dorsal spine small, projecting forward anal fin below soft rays of dorsal fin height of first dorsal fin 18.4 to 27.6 % SL second dorsal spine longer than third dorsal spine or these spines about equal third anal spine longer than second anal spine anal and dorsal fins with scaly basal sheath pectoral fins of moderate size ventral fins large caudal fin forked with rounded tips. Small schools are often seen around the vegetated edges of water bodies in areas of low flow.ĭorsal fin VII + I,7-9 Anal fin III,7-9 Pectoral fin 11-13 Caudal fin 14-15 Pelvic fin I, 5 Gill rakers 15-18 (lower limb first arch)īody laterally compressed, elongate-oval shaped greatest body depth 33.8 to 43.6 % SL head length 35.1 to 40.4 % SL snout length 7.1 to 9.6 % SL eye large, diameter 11.6 to 14.8 % SL mouth large, oblique reach edge of jaw reaching to front of eye teeth conical in jaws, on vomer and palatines head with small spines lateral line incomplete or in two sections, first dorsally to below spinous portion of dorsal with 0-11 tubed scales, second midlaterally on caudal peduncle with 0-15 pored scales. Known from Rockhampton, Queensland, to Lake Hiawatha, New South Wales, with a translocated population in Swan Reach, South Australia. The species is thought to be naturally extinct in South Australia and Victoria.Īgassiz's Glassfish inhabits lakes, creeks, swamps, wetlands and rivers. Historically found throughout the entire Murray-Darling Basin, but now extinct in Victoria and South Australia. Ambassis agassizii Steindachner 1867 More Info
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