Western Orange Perch, Lepidoperca filamenta Roberts 1987


Western Orange Perch, Lepidoperca filamenta. Source: Australian National Fish Collection, CSIRO. License: CC BY Attribution-Noncommercial

Summary:
A pinkish-orange rock-cod often becoming pale pink below with a lunate tail and an indistinct pale pink stripe from the upper jaw to the lower part of the gill cover. Males have a large black blotch on the anterior part of the soft dorsal fin, a small dark blotch on the middle of the pectoral fins, and another dark blotch on the middle of the anal fin. Females have blackish tips on the soft parts of the dorsal and anal fins. 

Cite this page as:
Bray, D.J. 2019, Lepidoperca filamenta in Fishes of Australia, accessed 14 Jul 2020, http://136.154.202.208/home/species/1713

Western Orange Perch, Lepidoperca filamenta Roberts 1987

More Info


Distribution

Endemic to southern Australia from south of Port Lincoln, South Australia, to off Geraldton, Western Australia. Inhabits deep reefs at depths to 230 m.

Features

Dorsal fin X, 16-17; Anal fin III, 8; Caudal fin 17; Pectoral fin 15; Pelvic fin I, 5; Lateral line scales (pored) 39-43; Upper transverse scale rows 4, lower transverse scale rows 12-14; Gill rakers 9-10 + 24-27 = 33-37.
Body depth 38-44% SL; head length 34-39% SL; eye diameter 33–42% HL; upper jaw length 2.08-2.43 in HL; maxilla reaching to below middle of pupil. Caudal fin lunate, dorsal lobe 0.83-1.10 in HL; pelvic fin long, 2.44-2.90 in SL; basal part of spinous dorsal fin scaled; axil of pectoral fin scaled.

Fisheries

The species is occasionally on hook and line, and as bycatch in commercial trawls.

Similar Species

Lepidoperca filamenta differs from the similar Eastern Orange Perch, Lepidoperca pulchella in having fewer scales in the upper transverse series (4 vs. 5), a longer caudal fin (dorsal lobe 0.83-1.10 vs. 1.17-1.41 in HL), and a small dark blotch at the centre of anal and pectoral fins (vs. absent). In addition, modal differences are found in the following characters: pored lateral line scales (39-43 vs. 42-45), gill rakers on lower arch (24-27 vs. 26-30), bony orbit diameter (2.40-3.02 vs. 2.60-3.54 in HL), upper jaw length (2.18-2.43 vs. 2.28-2.54 in HL), longest anal soft ray (1.27- 1.74 vs. 1.68-2.48 in HL) and pelvic fin length (2.88-3.38 vs. 3.18-3.88 in SL).

Etymology

The specific name is from the Latin filum (thread) and mentum (forming), in reference to the long filamentous rays of the caudal fin lobes.

Species Citation

Lepidoperca filamenta Roberts 1987, Mem. Mus. Vic. 48(1): 83. Type locality: west of Eucla, Great Australian Bight, Western Australia [32°20'S, 128°00'E]. 

Author

Bray, D.J. 2019

Resources

Atlas of Living Australia

Western Orange Perch, Lepidoperca filamenta Roberts 1987

References


Heemstra, P.C. & Sadovy, Y.J. 2010. Lepidoperca filamenta (errata version published in 2017). The IUCN Red List of Threatened Species 2010: e.T155264A115293192. http://dx.doi.org/10.2305/IUCN.UK.2010-4.RLTS.T155264A4760561.en. Downloaded on 23 Jan 2019.

Kuiter, R.H. 1994. Families Serranidae, Callanthiidae. pp. 528-548 figs 469-485 in Gomon, M.F., Glover, C.J.M. & Kuiter, R.H. (eds). The Fishes of Australia's South Coast. Adelaide : State Printer 992 pp. 810 figs.

Roberts, C.D. 1987. New Australian fishes. Part 19. A new species of Lepidoperca (Serranidae). Memoirs of Museum Victoria 48(1): 83-84. DOI https://doi.org/10.24199/j.mmv.1987.48.19 PDF available, open access

Roberts, C.D. 1989. A revision of New Zealand and Australian orange perches (Teleostei; Serranidae) previously referred to Lepidoperca pulchella (Waite) with description of a new species of Lepidoperca from New Zealand. Journal of Natural History 23(3): 557-589. https://doi.org/10.1080/00222938900770321

Roberts, C.D. & Gomon, M.F. 2008. Families Polyprionidae, Serranidae and Callanthiidae. pp. 534-549 in Gomon. M.F., Bray, D.J. & Kuiter, R.H (eds). Fishes of Australia's Southern Coast. Sydney : Reed New Holland 928 pp.

Quick Facts


CAAB Code:37311175

Danger:IUCN Least Concern

Depth:110-230 m

Habitat:Reef associated

Max Size:18 cm TL

Native:Endemic

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