Biology
Species | Aldrichetta forseri |
Common Name | Yelloweye Mullet |
Importance | Minor |
Habitat | Sheltered sand, seagrass, may ascend rivers into freshwater |
Depth | ≤ 20 m (Edgar, 2008) |
Distribution | Western Australia (Shark Bay) to New South Wales, around Tasmania, New Zealand (Edgar, 2008) |
Diet | Planktonic animals (juvenile fish), benthic crustaceans and molluscs (medium-sized fish), almost exclusively algae (larger fish) (Edgar, 2008) |
Stock Structure | No genetic studies but there appears to be two populations: eastern Australia and western Australia |
Movement | Schooling fish (Kailola et al., 1993) |
M (Natural Mortality) | 0.66 (New Zealand population) (Taylor and Paul, 1998) |
Maximum Age (years) | 7 |
Maximum Length (total length; cm) | 50 (Edgar, 2008) |
Maximum Weight (g) | 950 (Edgar, 2008; Curtis and Shima, 2005) |
Unsexed K (von Bertalanffy growth parameter) | 0.51 |
Unsexed t0 (age (years) when length = 0) | -0.03 |
Unsexed L∞ (asymptotic von Bertalanffy length (fork length; cm)) | 40 |
Length (FL; fork length (cm))– Weight (W; g) Relationship | W=0.000239 L^3.2 (males and females combined, although different between sexes) (Chubb et al., 1981; Gorman, 1962; Last et al., 1983) |
Age at Maturity (years) | 2 – 3 (Kailola et al., 1993) |
Spawning Season | Summer and autumn |
Spawning Location | Coastal waters, probably in estuaries |
Additional Spawning Information | Form large aggregations prior to spawning; pelagic eggs; fecundity 125 000 – 630 000 eggs (Chubb et al., 1981; Kailola et al., 1993) |
Early Life History | Juveniles enter esturaries and sheltered bays when they are 3 – 4 cm long, remain there until 25 – 30 cm tail length; gradually move to more open coastal waters with age (Kailola et al., 1993) |
Gillnet Post Release Survival | Low: 10% (Lyle et al., 2014) |