Paraulopus balteatus Gomon 2010


A Banded Cucumberfish, Paraulopus balteatus, caught on a dropline at Browns Seamount, southeast of Botany Bay, New South Wales. Source: Brenden Kong. License: All rights reserved

Summary:
A recently described greeneye with enormous eyes near the top of its head, and dorsal and caudal fins with a distinct white margin and a black submarginal band. Females have a completely white anal fin, whereas the anal fin in males has a narrow black margin. Body bluish-grey with an iridescent blue sheen above, two broad dusky bands around the body and a third at the tail base, underside pearly-white, and a greenish-yellow iris.

Greeneyes belong to the family Paraulopidae which was only recognised in 2002. They live in deep water on the continental slope, resting up off the bottom on their thickened pelvic-fin rays.

Cite this page as:
Martin F. Gomon & Dianne J. Bray, Paraulopus balteatus in Fishes of Australia, accessed 16 Nov 2018, http://fishesofaustralia.net.au/home/species/4778

Paraulopus balteatus Gomon 2010

More Info


Distribution

Known only from the Tasman Sea at 30–35°S, from Browns Mount south-east of Botany Bay, New South Wales, to the Three Kings Ridge just north of the northern boundary of New Zealand’s EEZ, in depths no shallower than 300 m and no greater than 800 m.

Features

Meristic features: Dorsal fin 11; Anal fin 9; Caudal fin 1+8+1+9+8+1+8+1; Pectoral fin 19; Pelvic fin 9; Vertebrae 19+29; Lateral line scales 48–49; scales above lateral line 5.5; scales below lateral line 3.5; predorsal scales 19–24; Gill rakers 8–9+18–20 = 27–28.

Size

Largest known specimen: 32 cm SL

Colour

Body dusky above, pale below, with two broad brown bands around body and a third at tail base, and several broad diagonal blotches between bands. Snout, dorsal part of cheek and operculum very dark. Buccal lining of mouth black; tongue black with white tip and lateral margins. Dorsal fin dark brown basally with broad black marginal stripe occupying distal half (to third) of fin anteriorly, and broad white submarginal stripe. Adipose fin dusky. Anal fin white with a narrow black margin anteriorly and distally in males; entirely white in females. Caudal fin dark basally with broad pale vertical intermediate band and a narrow white marginal band with a black submarginal band on the upper lobe and a narrow black marginal band on the dorsal two-thirds of the lower lobe. Pectoral fin dusky. Pelvic fin rather dark with white margin on distal edge and distally along anterior edge; fine black distal edge (in males only).

Feeding

Carnivore

Biology

Almost nothing is known of the biology of this species. The sexes are separate and fertilisation is external.

Fisheries

Occasionally taken as by-catch in trawl fisheries, and also deep water drop lines by recreational anglers.

Conservation

IUCN Red List: Not evaluated.

EPBC Act 1999: Not listed.

Remarks


Similar Species

Similar to Paraulopus okamurai, a closely related species that occurs in the same area. P. balteatus reaches a similarly large size and also has distinctive black-and-white-patterned dorsal and caudal fins. P. balteatus has prominent broad dark bands on the sides of adults (versus, at most, much smaller brown blotches midlaterally and a smaller brownish saddle behind the adipose fin in P. okamurai), 8–9 anal fin rays (versus 9–11 rays, rarely 9), 19 pectoral fin rays (versus 16–17), and an entirely black interior of the mouth, except for the tongue, which has white at the tip and along the lateral edges (versus entirely pale in P. okamurai)

Etymology

The name balteatus is from the Latin for ‘belted or banded’, in reference to the distinctive broad brown bands on the sides of the body in this species.

Species Citation

Paraulopus balteatus Gomon 2010, Mem. Mus. Vic. 67: 15-18. Type locality: Browns Mount off Botany Bay, New South Wales, Australia, Tasman Sea, 34°02'S, 151°39'E (estimated), 430 m.

Author

Martin F. Gomon & Dianne J. Bray

Resources


Paraulopus balteatus Gomon 2010

References


Gomon, M.F. 2010. A new species of Paraulopus (Aulopiformes: Paraulopidae) from seamounts of the Tasman Sea. Memoirs of Museum Victoria 67: 15-18.

Quick Facts


CAAB Code:37120019

Depth:300-800 m

Habitat:Offshore, seamounts

Max Size:32 cm SL

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CAAB distribution map