Glaucosoma hebraicum Richardson, 1845 WEST AUSTRALIAN DHUFISH
Dhuie; Jewfish; Jewie; Wa Pearl Perch; West Australian Jewfish; West Australian Pearl Perch; Western Jewfish; Westralian Jewfish; Breviperca lineata Castelnau, 1875
Eastern Indian Ocean: endemic to Australian waters. Distributed from the Recherche Archipelago off Esperance, to Beagle Island, although they are rare north of Shark Bay. Records from Japan (Ref.
) and Taiwan (Ref.
Length at first maturity / Size / Weight / Age
, range 59 - ? cm
Max length : 122 cm TL male/unsexed; (Ref.
); common length : 80.0 cm TL male/unsexed; (Ref.
); max. published weight: 26.0 kg (Ref.
: 9. One dark vertical band through eye which may disappear with an increase in size; 11 dorsal fin rays and 9 anal fin rays. Supraclavicle not developed into a bony shield. Peritoneum and gill rakers pale; lateral line with 44 to 48 pored scales; juveniles with wide dark horizontal bands wider than interspaces.
Westralian jewfish live in shallow inshore waters and depths to over 200 m (Ref.
). They are present over hard, flat sea beds (e.g. limestone shelf) and in reefs, wrecks and underwater caverns and gutters. Adult fish move into shallower waters in the cooler months between April and June (Ref.
). Juveniles tend to remain in shallower water than adults and are rarely found in waters more than 100 m deep (Ref.
). Adults feed mainly on fish, also rock lobsters, crabs, squid, octopus and cuttlefish. Marketed as fresh fish (Ref.
Female Westralian jewfish are broadcast spawners, releasing floating eggs into the water column; these are pelagic and can be carried large distances on ocean surface currents (Ref.
). Larvae feed on plankton (Ref.
, 1997. FAO Species Catalogue. Vol. 17. Pearl perches of the world (family Glaucosomatidae). An annotated and illustrated catalogue of the pearl peches known to date. FAO Fish. Synop. 125(17):26p. Rome: FAO. (Ref.
Preferred temperature (Ref.
): 15.9 - 26.7, mean 20.4 (based on 86 cells).
Phylogenetic diversity index (Ref.
= 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01445 (0.00602 - 0.03469), b=2.98 (2.77 - 3.19), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref.
Trophic Level (Ref.
): 4.3 ±0.62 se; Based on food items.
): Medium, minimum population doubling time 1.4 - 4.4 years (tm=3-4; Fec=300,000).
): High vulnerability (64 of 100) .
Price category (Ref.
Luna, Susan M.
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