Australia country information

Common names: Mackerel trevalla, Silver warehou, Silver warehou
Occurrence: native
Salinity: brackish
Abundance: common (usually seen) | Ref: Kailola, P.J., M.J. Williams, P.C. Stewart, R.E. Reichelt, A. McNee and C. Grieve, 1993
Importance: commercial | Ref: Kailola, P.J., M.J. Williams, P.C. Stewart, R.E. Reichelt, A. McNee and C. Grieve, 1993
Aquaculture: never/rarely | Ref: Kailola, P.J., M.J. Williams, P.C. Stewart, R.E. Reichelt, A. McNee and C. Grieve, 1993
Regulations: restricted | Ref: Kailola, P.J., M.J. Williams, P.C. Stewart, R.E. Reichelt, A. McNee and C. Grieve, 1993
Uses: no uses
Comments: Occurs from South Australia to New South Wales and Tasmania (Ref. 9563). Also recorded from Spencer Gulf (Ref. 6390). Commercial fishery: The warehou fishery has developed only since the late 1970s. Increases in the number of trawlers fishing southern New South Wales and eastern Victoria and greater market acceptance of warehous saw annual landings reach about 1800 t by 1986 (Ref. 30458). Prior to 1987, most of the warehous catch was taken by trawlers using demersal otter trawl nets. Since then landings have increased greatly due to the targeting of blue warehou by fishers using bottom set gillnets in the Southern Shark Fishery. Both blue and spotted warehou also form a bycatch of gillnet fishing for school sharks (Galeorhinus galeus) and gummy sharks (Mustelus antarcticus) in the Southern Shark Fishery. The amount of warehou landed by gillnet fishers operating in Victorian waters has increased from 80 t in 1984 to over 1700 t in 1990. Both warehou species are also caught in Tasmanian waters by coastal set gillnets. Tasmanian fishers target schooling warehou by setting the gillnets on reefs in depths up to 20 m. There is also potential for the use of mid-water trawl nets to target schooling warehou (Ref. 30459). The main trawling grounds for warehou are off southern New South Wales, eastern and western Victoria, and north-western Tasmania where significant catches of spotted warehou are taken (Ref. 30460, 30458). Spotted warehou catches are greatest from depths between 150 m and 250 m and significant catches are also recorded between 400 m and 550 m (Ref. 30458). Trawl catches of warehous show a distinct seasonal trend with late winter and early spring producing the largest catches of both species (Ref. 30461). Most of the warehou catch is sold on the domestic fresh fish market, mainly through the Melbourne Wholesale Fish Market. The 2 species are often marketed together but when they are marketed separately, blue warehous tend to gain higher prices. Recreational fishery: Anglers catch juveniles of both warehou species in large bays and estuaries, with blue warehou more common in recreational catches than are spotted warehou. Warehous are normally caught by anglers during the colder months of the year, on baits of prawn (Penaeidae), rock lobster (Jasus species) or fish flesh (Ref. 27128). Recreational fishers in Tasmania use coastal set gillnets to catch warehou. Resource status: There is insufficient information to determine the status for spotted warehou in Australian waters. Estimates of biomass for spotted warehou in some areas of the South East Fishery have varied considerably: hence, further research is needed to better estimate biomass by allowing for seasonal changes in local abundance (Ref. 30458). The lack of sound biomass estimates means that it is not possible to determine whether current catch levels are sustainable for spotted warehou.
National Checklist:
Country Information: httpss://www.cia.gov/library/publications/resources/the-world-factbook/geos/as.html
National Fisheries Authority: https://www.csiro.au/
Occurrences: Occurrences Point map
Main Ref: Kailola, P.J., M.J. Williams, P.C. Stewart, R.E. Reichelt, A. McNee and C. Grieve, 1993
National Database:

Classification / Names

Actinopterygii (ray-finned fishes) > Perciformes (Perch-likes) > Centrolophidae (Medusafishes)
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL

Common names from other countries

Cojinoba moteada, Spotted warehou, Cojinoba moteada, ... more

Main reference

Paulin, C., A. Stewart, C. Roberts and P. McMillan. 1989. (Ref. 5755)
References | Biblio | Coordinator | Collaborators

Size / Weight / Age

Max length : 66.0 cm TL male/unsexed; (Ref. 9563); common length : 51.0 cm FL male/unsexed; (Ref. 9049); max. reported age: 15 years (Ref. 9072)

Length at first maturity
L_m 40.0 range ? - ? cm

Environment

Marine; brackish; benthopelagic; oceanodromous (Ref. 51243); depth range 27 - 650 m (Ref. 58489)

Climate / Range

Temperate, preferred 14°C (Ref. 107945); 32°S - 55°S, 115°E - 71°W

Distribution

Eastern Indian Ocean: southern Australia (from South Australia to New South Wales and Tasmania). Southwest Pacific: New Zealand. Southeast Pacific: Chile (Ref. 9068).
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Adults are usually demersal on the continental shelf and slope, occasionally occurring at the surface; subadults in surface waters, sometimes entering bays, while juveniles occur offshore (Ref. 9563). Reported from depths of 27 m (Ref. 58489) to 600 m (Ref. 9563). They form feeding and spawning aggregations. Spotted warehou are schooling species, usually aggregating close to the sea bed (Ref. 26498) although there is some evidence that they move into the middle water column at night (Ref. 30459). During spring-summer in New Zealand, adult and juvenile fish migrate to feed along the continental slope off the east and southeast coast of the South Island (Ref. 9072). Adults mainly eat planktonic tunicates (Ref. 6390).

IUCN Red List Status (Ref. 115185)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: commercial

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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805)
PD₅₀ = 0.5156 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Trophic Level (Ref. 69278)
3.5 ±0.41 se; Based on food items.

Resilience (Ref. 69278)
Medium, minimum population doubling time 1.4 - 4.4 years (K=0.36; tm=3-4; tmax=15)

Vulnerability (Ref. 59153)
Low to moderate vulnerability (33 of 100)

Price category (Ref. 80766)
High

Seriolella punctata (Forster, 1801)