Jump to content
Sign in to follow this  
wayne6442

Redclaw Crayfish ( Cherax quadricurinatus)

Recommended Posts

wayne6442

   Cherax quadricarinatus (Redclaw Grayfish)    Back in 1985, I started a semi commercial venture breeding Redclaw Crayfish for the commercial market. My set up consisted of four 5,000 litre above ground swimming pools, set side by side with an overflow water exchange feature, a swimming pool pump and a pool sand filter. Water pick up for filtering was regulated from each pool passed down a common pipe to the filter, and from there the water was returned to the ponds via a spray system from above. This ensured that the returning filtered water was well airated for the redclaws.     My initial stock consisted of about 400 wild caught Redclaws from Northern Queensland split roughly between the four pools. About three weeks before stocking I seeded each pool with about 10 kilos each of mud from a local dam and cow manure from a dairy farm,to set up the bio eco system that the cray's would need     This venture ran well for about three years, I was supplying my restaurant and others with live crayfish an a weekly basis.  AND THEN!!!  the government started to interfere by imposing strict live fish trading rules and introducing very expensive licensing fees. Unfortunately, The combination of both were enough to force me to close down my enterprise.  

 (Cherax Quadricarinatus)!  Redclaw Crayfish  also known as the Tropical Blue crayfish,and Australian Freshwater Crayfish.     Redclaw crayfish are a moderately large crayfish, and can reach lengths of over 90 mm and weigh in anywhere between 300 and 600 grams. They have a smooth body which is greenish/blueish in colour, the male of the species is distinguished by a bright red colouring on the margins of their large claws.     The Redclaw is native to the upper reaches of the rivers in north eastern Australia and Papua New Guinea. It's preferred habitat is in high turbidity,slow moving streams or static waterholes. Redclaw prefer sites with abundant aquatic vegetation that provides cover. Redclaw do not burrow into the riverbanks like other Cherax species but prefer to hide in natural depressions,under rocks or amongst vegetation.       Female Redclaw brood their eggs for six to ten weeks, depending on temperature. Most produce between 300 to 800 eggs per brood and they sometime breed five to six times per season. Water temperature is important  for breeding with the preferred range being 23 C to 31 C. Hatchling's resemble the adults and remain attached to the undersides of the female for several weeks before becoming independent                                                     5aacc7ed7eec5_redclaw3.jpg.97f19c627af3be7e7ff16f3ea7801bbf.jpg  male Redclaw
      Redclaw are NOT good aquarium tank mates, DO NOT KEEP THEM IN WITH OTHER FISH OR PLANTED TANKS. Although more placid than their other Charex cousins, they can get very agro when they have a mind to. My tip is to house them in a large aquarium 60 cm or larger with plenty of structure for hiding places so as they can get away from each other especially during times when they are moulting. The female also becomes very territorial when berried. FEEDING: They are omnivores but tend to eat more vegetable material, I have known them to munch into driftwood in their tank, they are not good fisherman being slower than  other Cherax species, but that does not exclude fresh fish from their diet. They do like chicken pellets, a very small piece of red meat , worms, and fish.

     I found that water temperature at around 25C to be good ( don't go up to 31C) good filtration with plenty of surface movement. PH between 6 and 7.5 although they can stand higher. Selective Breeding : I found the Redclaw to be relative easy contender for selective breeding ,having success in breeding a beautiful deep blue, pale blue, a deep green and an almost albino over successive generations. I also found that sometimes they will revert back to their original colours when severely stressed. I hope that this article will help some of you who are contemplating keeping Redcaw Crayfish.

 

5aacc7b681ac9_bluered.jpg.1ecd2fb7c2cd1d5c2e99f47d6f189e9f.jpgMale Blue                 5aacc809f0baa_redclaw6.jpg.bc8ca5026ace1efdf24a3622af356658.jpgFemale White

 

Disclaimer : The information contained in this article is purely from my own experiences and is by no means intended to be completely right in my findings Wayne Summerhayes

Share this post


Link to post
Share on other sites
wayne6442

Mods please note. i intended this publication to be posted in the article section but there was no sub heading to post it under. if you can can you please make a section and post please

Share this post


Link to post
Share on other sites
jayc

@Cesar will be able to help with a new subsection in the Articles area. Maybe change the "Crab" subsection to "Crabs and Crays".

  • Like 1

Share this post


Link to post
Share on other sites
Cesar

@jayc great suggestion, article section has been updated to Crabs and Crayfish...

@wayne6442 please repost your article to the article section and I will delete this post to avoid duplicate content...

Thanks for the great suggestions and contributions!

-Cesar

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

  • Similar Content

    • wayne6442
      By wayne6442
      Cherax quadricarinatus (Redclaw Grayfish)    Back in 1985, I started a semi commercial venture breeding Redclaw Crayfish for the commercial market. My set up consisted of four 5,000 litre above ground swimming pools, set side by side with an overflow water exchange feature, a swimming pool pump and a pool sand filter. Water pick up for filtering was regulated from each pool passed down a common pipe to the filter, and from there the water was returned to the ponds via a spray system from above. This ensured that the returning filtered water was well airated for the redclaws.     My initial stock consisted of about 400 wild caught Redclaws from Northern Queensland split roughly between the four pools. About three weeks before stocking I seeded each pool with about 10 kilos each of mud from a local dam and cow manure from a dairy farm,to set up the bio eco system that the cray's would need     This venture ran well for about three years, I was supplying my restaurant and others with live crayfish an a weekly basis.  AND THEN!!!  the government started to interfere by imposing strict live fish trading rules and introducing very expensive licensing fees. Unfortunately, The combination of both were enough to force me to close down my enterprise.  
       (Cherax Quadricarinatus)!  Redclaw Crayfish  also known as the Tropical Blue crayfish,and Australian Freshwater Crayfish.     Redclaw crayfish are a moderately large crayfish, and can reach lengths of over 90 mm and weigh in anywhere between 300 and 600 grams. They have a smooth body which is greenish/blueish in colour, the male of the species is distinguished by a bright red colouring on the margins of their large claws.     The Redclaw is native to the upper reaches of the rivers in north eastern Australia and Papua New Guinea. It's preferred habitat is in high turbidity,slow moving streams or static waterholes. Redclaw prefer sites with abundant aquatic vegetation that provides cover. Redclaw do not burrow into the riverbanks like other Cherax species but prefer to hide in natural depressions,under rocks or amongst vegetation.       Female Redclaw brood their eggs for six to ten weeks, depending on temperature. Most produce between 300 to 800 eggs per brood and they sometime breed five to six times per season. Water temperature is important  for breeding with the preferred range being 23 C to 31 C. Hatchling's resemble the adults and remain attached to the undersides of the female for several weeks before becoming independent                                                       male Redclaw
            Redclaw are NOT good aquarium tank mates, DO NOT KEEP THEM IN WITH OTHER FISH OR PLANTED TANKS. Although more placid than their other Charex cousins, they can get very agro when they have a mind to. My tip is to house them in a large aquarium 60 cm or larger with plenty of structure for hiding places so as they can get away from each other especially during times when they are moulting. The female also becomes very territorial when berried. FEEDING: They are omnivores but tend to eat more vegetable material, I have known them to munch into driftwood in their tank, they are not good fisherman being slower than  other Cherax species, but that does not exclude fresh fish from their diet. They do like chicken pellets, a very small piece of red meat , worms, and fish.
           I found that water temperature at around 25C to be good ( don't go up to 31C) good filtration with plenty of surface movement. PH between 6 and 7.5 although they can stand higher. Selective Breeding : I found the Redclaw to be relative easy contender for selective breeding ,having success in breeding a beautiful deep blue, pale blue, a deep green and an almost albino over successive generations. I also found that sometimes they will revert back to their original colours when severely stressed. I hope that this article will help some of you who are contemplating keeping Redcaw Crayfish.
       
      Male Blue                 Female White
       
      Disclaimer : The information contained in this article is purely from my own experiences and is by no means intended to be completely right in my findings Wayne Summerhayes
         
      View full article
    • wayne6442
      By wayne6442
      Cherax quadricarinatus (Redclaw Grayfish)    Back in 1985, I started a semi commercial venture breeding Redclaw Crayfish for the commercial market. My set up consisted of four 5,000 litre above ground swimming pools, set side by side with an overflow water exchange feature, a swimming pool pump and a pool sand filter. Water pick up for filtering was regulated from each pool passed down a common pipe to the filter, and from there the water was returned to the ponds via a spray system from above. This ensured that the returning filtered water was well airated for the redclaws.     My initial stock consisted of about 400 wild caught Redclaws from Northern Queensland split roughly between the four pools. About three weeks before stocking I seeded each pool with about 10 kilos each of mud from a local dam and cow manure from a dairy farm,to set up the bio eco system that the cray's would need     This venture ran well for about three years, I was supplying my restaurant and others with live crayfish an a weekly basis.  AND THEN!!!  the government started to interfere by imposing strict live fish trading rules and introducing very expensive licensing fees. Unfortunately, The combination of both were enough to force me to close down my enterprise.  
       (Cherax Quadricarinatus)!  Redclaw Crayfish  also known as the Tropical Blue crayfish,and Australian Freshwater Crayfish.     Redclaw crayfish are a moderately large crayfish, and can reach lengths of over 90 mm and weigh in anywhere between 300 and 600 grams. They have a smooth body which is greenish/blueish in colour, the male of the species is distinguished by a bright red colouring on the margins of their large claws.     The Redclaw is native to the upper reaches of the rivers in north eastern Australia and Papua New Guinea. It's preferred habitat is in high turbidity,slow moving streams or static waterholes. Redclaw prefer sites with abundant aquatic vegetation that provides cover. Redclaw do not burrow into the riverbanks like other Cherax species but prefer to hide in natural depressions,under rocks or amongst vegetation.       Female Redclaw brood their eggs for six to ten weeks, depending on temperature. Most produce between 300 to 800 eggs per brood and they sometime breed five to six times per season. Water temperature is important  for breeding with the preferred range being 23 C to 31 C. Hatchling's resemble the adults and remain attached to the undersides of the female for several weeks before becoming independent                                                       male Redclaw
            Redclaw are NOT good aquarium tank mates, DO NOT KEEP THEM IN WITH OTHER FISH OR PLANTED TANKS. Although more placid than their other Charex cousins, they can get very agro when they have a mind to. My tip is to house them in a large aquarium 60 cm or larger with plenty of structure for hiding places so as they can get away from each other especially during times when they are moulting. The female also becomes very territorial when berried. FEEDING: They are omnivores but tend to eat more vegetable material, I have known them to munch into driftwood in their tank, they are not good fisherman being slower than  other Cherax species, but that does not exclude fresh fish from their diet. They do like chicken pellets, a very small piece of red meat , worms, and fish.
           I found that water temperature at around 25C to be good ( don't go up to 31C) good filtration with plenty of surface movement. PH between 6 and 7.5 although they can stand higher. Selective Breeding : I found the Redclaw to be relative easy contender for selective breeding ,having success in breeding a beautiful deep blue, pale blue, a deep green and an almost albino over successive generations. I also found that sometimes they will revert back to their original colours when severely stressed. I hope that this article will help some of you who are contemplating keeping Redcaw Crayfish.
       
      Male Blue                 Female White
       
      Disclaimer : The information contained in this article is purely from my own experiences and is by no means intended to be completely right in my findings Wayne Summerhayes
         


  • Must Read SKF Articles

  • Register today, ask questions and share your shrimp and fish tank experiences with us!

    Join Our Community!

  • Posts

    • jayc
      It sounds about right for GH6 (6 drops is roughly 120 TDS). Those GH test kits are not the most accurate. And RO water reading of 3 is not unreasonable. I don't know why you would have been reading 240TDS last week and now it's a 100 points lower. I would suggest, not changing water parameter with a water change for a week, then see where it is at. Change if it gets close to 200 (say around 180-190). Let's give the tank some stability by not changing anything for a while.
    • supermansteve32
      I checked my TDS meter and it reads 3 on RO water and today my TDS in my tank is 133. I did a test with API and it took 6 drops so that's around 100 TDS.  I had 2 adolescents die overnight.  Should I only change water when it's over 200 TDS or should i continue with the 10% every week?  Thanks
    • supermansteve32
      I'll check it when I get off work tonight. I'll check my reader against pure RO water & tap, and do a GH test.  I'll also clean my TDS meter.  Thanks for your help everyone. 
    • beanbag
      If u have a GH test kit, then u can do a cross check, where each GH value in RO water made with SS equals about 20 ppm, e.g. GH 6 water will give you about 120 ppm.
    • sdlTBfanUK
      Are you sure the new reading is correct as that sounds unlikely, and I would have thought you would have had shrimps dying  with that sort of decrease. Do you have a second way of checking the TDS, or can you take a sample to a fish shop for them to test? I can't think of any reason that would happen or even heard of that before? Even if you had put pure RO water in last water change it wouldn't have dropped that far! If it is currently the TDS113 it will make adjusting easy as you just mix the water to the desired end TDS figure (140ish) and it will slowly go up to that. Simon
×