Aussie natives Stocking.

  • We are currently upgrading MFK. thanks! -neo
very well not 1 death yet. theres some in a pond and some in my tank. there very cute and they dont hassle my leichardtii which is good!
 
You know with the gambusia problem? I had an idea for a way to control it, after my barramundi inspired me. I know alot of people don't recommend feeding gambusia to their fish, but I reckno it should be good if you check they are healthy, because there are bucketloads out there.

When I put about 50 gambusia in my old barras tank, he was about 20cm, and in the morning there were none left, so why don't we stock the areas where gambusia are with a heap of barras?
 
Well for starters if barra don't naturally occur in those areas you may as well be dumping peacock bass in there, no different as far as impacts on endemic fish community. Even if barra do occur, how much thought is given to the effect of artificially increasing predator numbers? Once the gambusia are eaten (supposing they will even go for the gambusia when presented with a range of prey species), what do they target next? Also will the genetics of hatchery fish reduce the fitness of wild stocks when breeding occurs?
 
masone;3751047; said:
Also will the genetics of hatchery fish reduce the fitness of wild stocks when breeding occurs?
Click to expand...
Hatcheries are supposed to use localy sourced broodstock though not all do this. The worst example though would be Bass where constant use of Noosa strain fish (stipulated by DPI&f) and there progeny sourced from impoundments would certainly have caused.
Loss of within-population variability.
Loss of among-population variability by outbreeding depression.
And the fitness problems arising from domestication due to many generations of hatchery produced fish.
Steve.
 
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