Backyard Aquaponics
A place to discuss aquaponics

LOL, i bought my four at around 250g the bastards wouldn't take anything but diced beef heart or lamb heart, although they made light work of the yabbies and convicts that used to live in the aquarium. they now take pellet food..........its amazing what two weeks of starvation can accomplish!

Starvation always worked for me as well Steve!!! LOL.

Another method I found to work well with both sleepy cod and golden perch was crushing (daily increases) of blood worms/meal worms into crumble dust or 1mm pellets. I know that its a bit messy but I always, after learning this technique ,was able to convert my fish from live feeds to pelleted feeds in much quicker time and with less mortalities.

I had one Murray cod in the tank mixed with other fish for quite a long time, everything was good so long as the other fish were a reasonable size.. Drop a little goldfish in the tank and it would disapear in seconds...

Theres something very Roman about live feeding

Kell you've obviously had some aquaculture experience in the past.

Not many (even in aquaculture) seem to know or have much practicle experience with Sleepy Cod.

Can you share any information and references you might have.

That goes for Murray Cod as well... not a lot of info readilly avaiable.

Maybe start a "Cod" thread.

Hi RupertofOZ

Im more than happy to share knowledge and experience with people in this forum. I will spend the weekend collating links and info for everyone and post links on the site early next week. Most of my info comes from a commercial aquaculture perspective, but things such as husbandry, breeding specific's, culture techniques, tricks of the trade etc... will be highly relevant.

I must admit i am not the most computer literate person (this is the first online chatroom/forum I have ever joined). I will do my best though to get this information to everyone early next week. I'm kinda busy at the moment on the computer at work and are reading the forum in between work.

If anyone has any specific questions relating to either of these two species, please do not hesitate to ask.

Thank you Kell, anything would be greatly appreaciated... for some reason there's just not that much readily apparant info on either species...

Seems to be more members thinking of Cod due to temperature constraints through winter

For a native warmwater fish, Murray Cod are amazing at surviving low temperatures for extended periods of time. One warning though, they will grow very little (may even loose weight) at temp below 18 degrees. All commercial operators would have temps b/w 22-26 for Murray cod, but often in the southern states this is only maintainable for 3-4 months.

I will compile the best of my gov/research/industry information and make it available for all next week.

good info thank you-- figure though that one of the mods will move info to the relevant place 'fish info' or other.
C1

Wow that pool is way cooler than mine! Cant wait till mine looks like that LOL!

Unless you can get some money by selling the sand filter, you may consider leaving it as part of the system at first - just replace the sand with hydroton and you have a great biofilter. Start the beds also - like steve says. You may want the extra biofiltration (ie provided by the converted sand filter) if you end up using some rafts on the pool, which will remove nitrate but provide less housing for bacteria than equivalent gravel beds.

DOH! i didn't even think of replacing the sand with expanded clay balls!

Do as VB says. The reason i said to remove it was that the DE "sand" in the filter would have probably clogged quite easy....................

post pic as you go along!

Steve

If you were to continue using the sand filter would it be best to slow down the flow/pressure through the filter e.g putting a T between the pump and the filter, or do you think it wouldn't really matter?

great advice on the sand filter, i was wondering myself if you could use it. i love murray cod but i would suggest if you are just starting out try something easier like the silver( am i correct in this?) i once started with 60 cod and now have 1, very important to regulary check sizes otherwise they just disappear, i also like to keep mine at 22c to 24c. if its lower they get larthargic, higher the predators get more active, thats just what i have noticed, could be just me?