Murray-Darling FBP - ecological implications - Murray River cod

Mature fish: Pools, associated with snags and large woody debris
Spawning: Eggs deposited on snags, rocks or firm clay

Age at maturity/spawning: 4 years; extreme variability depending on location and growth rate
Spawning season: October - December
Spawning cue: Onset of upstream migration generally coincides with elevated water levels. High larval survival occurs when significant rise in water level coincides with the breeding season.
Spawning frequency: Annual
Critical water temperature for spawning: 20ºC
Time to hatching: 4.5 to 13 days depending on temperature
Spawning migration: Often upstream
Longevity: 30 years

Habitat - specific spawner (spawn and recruit under high and low flow, habitat important)