1. The Practical Aquaponics discussion forum has been in operation for the last 5 years...

    We have enjoyed giving this service free of charge however ongoing increasing financial costs of running this service is making it increasingly difficult. Up until now we have resisted advertising as a means of a revenue stream to help run this forum but it has become inevitable that extra revenue is required to run this forum.

    We have introduced a donate button to help offset the cost of running this forum. It is completely voluntary, but if you would like to donate, all donations would be greatly appreciated.

    Thanks Murray..
    Dismiss Notice

Jade Perch - Barcoo Grunter (Scortum Barcoo)

Discussion in 'What Fish is that ?' started by RupertofOZ, Apr 17, 2010.

  1. RupertofOZ

    RupertofOZ New Member

    Jun 15, 2009
    I'd heard anecdotal evidence that someone had over-wintered Jade Perch on the Central Coast... in an unheated 2000L tank... sitting on the ground and totally exposed...

    Didn't really believe it... until Thursday when I delivered some trout.... and sure enough... there were about 50x 1kg+... 15 month old Jade Perch swimming around the tank...

    I figure the water temp must have got down around 14 or below during the winter around Wyong... possibly even lower....

    What's the lowest, and highest water temperatures that people have keep Jade Perch in... sucessfully?
  2. Castaway

    Castaway Senior Member

    Jun 7, 2009
    I've had them down to 12 C over winter with no problems on a cold morning. That's as low as I've seen on my thermometer. They wont eat at that temp and stay inert with little movement underwater.
  3. Murray

    Murray Site Admin Staff Member

    Jun 4, 2009
    Two tanks of mine last winter went down to 12 c water temp and all survived.
    It is anybody's guess what will happen below 12.

    The temps were not down at 12 all that often...more average would be 15.
    Fish moved about so slowly and often even stationary for very long periods...hardly ate anything for a couple of months.
    One particular fish would actually lay on it's side on the bottom and always looked like it was dying, but reach in and touch, it would come upright and swim away very slowly.
    My big tank of Jades with around 140 fish at the time was heated by gas and kept between 16 and 18 deg by the gas heater. They ate and continued to grow slowly over winter.
    Personally, I believe it can be done without any or very minimal heating.
  4. fishfood

    fishfood Active Member

    Jun 13, 2009
    OK will try mine out this winter
  5. Tsaphah

    Tsaphah Member

    Jun 17, 2009
    Mine have not endured such cold due to where I am located, but have hit 31°C on the hot side!

Share This Page