The Barramundi’s age is determined by counting growth rings on their scales or ear bones (much like counting the growth rings found on a tree). There are many factors that can affect the growth of a fish, for example, fish from an early spawning have a head start on those fish that are spawned late and will generally be larger by the end of their first year. Food availability and water conditions also affect the rate of growth.
Examples of typical length to age relationship are:
- 1-Year-old 30-40cm long
- 2 Years old 50-60cm long
- 3 Years old 60-80cm long
- 8 Years old 1 Metre long