Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Sparidae
Etymology: Petrus: Latin, petra = stone (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Marine; brackish; demersal; depth range 10 - ? m. Subtropical; 28°S - 34°S
Southeast Atlantic: Mossel Bay to Natal in South Africa.
Length at first maturity / Size / Weight / Age
Maturity: Lm 57.5  range ? - 70 cm
Max length : 200 cm TL male/unsexed; (Ref. 3198); common length : 100.0 cm TL male/unsexed; (Ref. 3507); max. published weight: 80.0 kg (Ref. 4537)
Found near rocky banks in coastal waters including estuaries. Adults solitary and territorial. Feeds on octopus, crabs and fish, especially Spondyliosoma. The flesh is highly esteemed, but the liver is poisonous due to high vitamin A content which causes hypervitaminosis. Popular angling fish. Largest of the porgies.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Smith, J.L.B. and M.M. Smith, 1986. Sparidae. p. 580-594. In M.M. Smith and P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlin. (Ref. 3198)
IUCN Red List Status (Ref. 115185)
CITES (Ref. 115941)
Threat to humans
Poisonous to eat (Ref. 3507)
Fisheries: minor commercial; gamefish: yes
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Preferred temperature (Ref. 115969
): 15 - 24, mean 22.2 (based on 10 cells).
Phylogenetic diversity index (Ref. 82805
= 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01549 (0.00877 - 0.02735), b=3.04 (2.89 - 3.19), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245
Trophic Level (Ref. 69278
): 4.5 ±0.61 se; Based on food items.
Resilience (Ref. 69278
): Low, minimum population doubling time 4.5 - 14 years (K=0.08; tm=5-7; tmax=30;).
Vulnerability (Ref. 59153
): Very high vulnerability (79 of 100) .