[1] It was classified in the new genus Velambassis by Gilbert Whitley in 1935, on the basis of having weaker dorsal spines than other members of the family.

[4] This species and the co-occurring estuary glassfish (A. marianus) are the only two members of the genus found in temperate waters.

[4] Reaching a standard length of 7 cm (2+3⁄4 in), the Port Jackson glassfish has a silver and semi-transparent body and head covered with large cycloid scales.

The Port Jackson glassfish also has a lateral line running the length of its body, while that of its relative is partial.

[4] The Port Jackson glassfish is native to coastal eastern Australia, from Moreton Bay in Queensland through to Narooma in southern New South Wales.