Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Moronidae
Etymology: saxatilis: saxatilis --- living among rocks (Ref. 1998).
Environment / Climate / Range
Marine; freshwater; brackish; demersal; anadromous (Ref. 51243); depth range 30 - ? m (Ref. 2850). Temperate; 8°C - 25°C (Ref. 47172); 46°N - 24°N, 94°W - 44°W
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 200 cm TL male/unsexed; (Ref. 5723); common length : 120 cm TL male/unsexed; (Ref. 9988); max. published weight: 57.0 kg (Ref. 2850); max. reported age: 30 years (Ref. 1468)
Western Atlantic: St. Lawrence River in Canada to St. John's River in northern Florida and northern Gulf of Mexico; from fresh and brackish tributaries of western Florida to Louisiana in the USA. Introduced to other countries.
Inhabit coastal waters and are commonly found in bays but may enter rivers in the spring to spawn (Ref. 2850). Some populations are landlocked (Ref. 7251). Voracious and opportunistic feeder (Ref. 5951). Larvae feed on zooplankton; juveniles take in small shrimps and other crustaceans, annelid worms, and insects (Ref. 1998, 10294); adults feed on a wide variety of fishes (alewives, herring, smelt, eels, flounders, mummichogs, rock gunnels, sand lance, silver hake and silversides (Ref. 5951)) and invertebrates (squid, crabs, sea worms and amphipods (Ref. 5951)), mainly crustaceans (Ref. 1998). Feeding ceases shortly before spawning (Ref. 1998). Utilized fresh and eaten broiled and baked (Ref. 9988).
Move into fresh or brackish water to spawn (Ref. 39467). Females spawn more than once in a season, but they don't necessarily spawn every year (Ref. 1998).
Heemstra, P.C., 1995. Moronidae. Lubinas. p. 1289-1292. In W. Fischer, F. Krupp, W. Schneider, C. Sommer, K.E. Carpenter and V. Niem (eds.) Guia FAO para Identification de Especies para lo Fines de la Pesca. Pacifico Centro-Oriental. 3 Vols. FAO, Rome. (Ref. 9320)
IUCN Red List Status (Ref. 96402)
CITES (Ref. 94142)
Threat to humans
Fisheries: minor commercial; aquaculture: commercial; gamefish: yes
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5781 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00776 (0.00442 - 0.01365), b=3.05 (2.88 - 3.22), based on LWR estimates for this species & Family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 4.7 ±0.2 se; Based on diet studies.
Resilience (Ref. 69278
): Low, minimum population doubling time 4.5 - 14 years (K=0.12; tm=5-7; tmax=30; Fec=14,000).
Vulnerability (Ref. 59153
): High vulnerability (61 of 100) .