Paperhead Jewfish, Johnius novaeguineae (Nichols 1950)

Other Names: Paperhead Croaker

Paperhead Jewfish, Johnius novaeguineae. Source: Australian National Fish Collection, CSIRO. License: CC by Attribution-NonCommercial-ShareAlike

Summary:

A small sciaenid with a large head, a steeply rounded snout, a very large, strongly oblique mouth, and a sharply pointed caudal fin.

Cite this page as:

Dianne J. Bray, Johnius novaeguineae in Fishes of Australia, accessed 11 Sep 2024, https://fishesofaustralia.net.au/home/species/665

Paperhead Jewfish, Johnius novaeguineae (Nichols 1950)

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Features

Dorsal fin VII-IX, 25-30; Anal fin II, 6-8; Gill rakers (lower limb) 16-18.
Head large, deep; eye very small, 11-16% HL; snout very steeply rounded; mouth very large, strongly oblique; no barbel; no upper rostral pores; mental pores in one pair only, open behind symphysis; teeth well differentiated into large and small in both jaws; gill rakers long, slender, equal to or longer than gill filaments at angle. Second anal-fin spine long, slender, 31-44% HL; caudal fin acutely pointed. Swim bladder hammer-shaped, with 11 pairs of arborescent appendages along its side, the first pair entering head beyond transverse septum and sending a palmate branch to the front of pectoral arch. Sagittal otolith with tadpole-shaped impression, the head of which has its long axis lying obliquely to that of sagitta and the tail expanded and deepened as a hollow cone connected with the head by a narrow groove.

Author

Dianne J. Bray