Biology
| Species | Notolabrus tetricus |
| Common Name | Bluethroat Wrasse |
| Importance | Key |
| Habitat | Sheltered and exposed reefs |
| Depth | 1 – 160 m (Edgar, 2008) |
| Distribution | Sydney (New South Wales) to Ceduna (South Australia) (Edgar, 2008) |
| Diet | Molluscs and crustaceans (Shepherd and Clarkson, 2001) |
| Stock Structure | No information available |
| Movement | Site-attached, with females showing overlapping home ranges and males territorial, at least during the reproductive season. No apparent migration of individuals between reefs (Barrett, 1995b) |
| M (Natural Mortality) | 0.2 (low adult mortality for both species, estimated for N. tetricus) (Barrett, 1995b; Smith et al., 2003) |
| Maximum Age (years) | 11 (Barrett, 1995b) |
| Unsexed K (von Bertalanffy growth parameter) | 0.2 |
| Unsexed t0 (age (years) when length = 0) | -0.35 |
| Unsexed L∞ (asymptotic von Bertalanffy length (fork length; cm)) | 36.12 |
| Length (FL; fork length (cm)) – Weight (W; g) Relationship | W=0.0545L^2.7157 (Barrett, 1995b; Welsford, 2003) |
| Size at Maturity (length (fork length; cm) at which 50% of population are sexually mature) | 29.89 (females before sex change) |
| Age at Maturity (age (years) at which 50% of population are sexually mature) | 8 (females before sex change) (Barrett, 1995a; Harwood, and Lokman, 2006) |
| Sexual development | Protogynous hermaphrodite (not all individuals undergo a sex inversion); sex change occurring between 27 – 32 cm in Tasmania |
| Spawning Season | August – January (Barrett, 1995b) |
| Early Life History | Planktonic larval duration ranges from 44 – 66 days; settlement on reefs at around 10.4 mm (Welsford, 2003) |
