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chloesnan chloesnan
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  • From Suffolk
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  • Posts: 27
  • Posted on: 23/2/2009 17:32
Blue Crayfish #1
Hi I would be pleased if someone could advise me on the care and feeding of a Blue Cray, we have been given it in an aquarium but no details of how to look after it, any help would be appreciated.
fishface2 fishface2
  • Just can't stay away
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  • Joined: 26/11/2008 16:37
  • From Cheshire
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  • Posts: 150
  • Posted on: 23/2/2009 17:45
Re: Blue Crayfish #2
Is this the same blue crayfish as on the care sheets?
If so, a bit of a worry!
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fishface2 fishface2
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  • Posted on: 23/2/2009 18:02
Re: Blue Crayfish #3
Ok, just googled blue crayfish.
'Cherax quadricarinatus' is the only fresh water crayfish that you can legally keep in the UK.
Think you need to check which species you have!
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chloesnan chloesnan
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  • Posted on: 23/2/2009 19:47
Re: Blue Crayfish #4
Hi yeah looking at the photos it is a 'Cherax quadricarinatus'.
fishface2 fishface2
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  • Posted on: 23/2/2009 20:02
Re: Blue Crayfish #5
Ok. I know bugger all about crayfish. Maybe pm LHG?
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fishface2 fishface2
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  • Posted on: 24/2/2009 19:58
Re: Blue Crayfish #6
Think identifying this creature looks rather complicated, more than just a quick glance! Prob ok, but better safe than sorry.
Also I see on your profile that you keep it with fish. A word of warning - crayfish will definitely try to eat your fish. If it catches one it will tear it apart.
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chloesnan chloesnan
  • Not too shy to talk
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  • Posts: 27
  • Posted on: 25/2/2009 23:05
Re: Blue Crayfish #7
Thanks for the website, thats where I identified it from, as for the other fish they have all been together for a couple of years and no damage, so they should be ok. Thanks for your interest.
Bye for now Chloesnan
longhairedgit longhairedgit
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  • Joined: 10/10/2007 13:03
  • From Gloucestershire
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  • Posts: 3088
  • Posted on: 26/2/2009 3:22
Re: Blue Crayfish #8
What are the species of fish its in with? Very few will be safe if they are within size range of or smaller than the cray. Generally they are considered non-community, you might find your riding your luck on this one. Most people who have then usually are, and they don't realise it or believe it until one day they wake up to find the cray has made a kill in the night, and is chewing a beloved fish in front of you.
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chloesnan chloesnan
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  • Posted on: 26/2/2009 15:01
Re: Blue Crayfish #9
I have 2 Golden Gouramis (think thats spelt right) one is about 3" long and the other 1 1/2" long and 2 scavengers one is about 3" long and the other is 5" long. I'd love to attach a photo but it won't upload, I don't know where the problem is I usually have no problem. Thanks
Bye for now Chloesnan
longhairedgit longhairedgit
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  • Posted on: 27/2/2009 20:13
Re: Blue Crayfish #10
Nobody ever does until they get one , and then its too late. Moral being, pre-empt problems don't ride luck. I can only explain it so many ways. Its a big cray, a total omnivore, in a tank with lots of soft bodied creatures it could kill if it takes a mind to, and by experience, many crayfish do just that.

You can't say you did'nt go forward without that knowledge passed on to you.If you get a fish eaten because you did'nt listen then thats your responsibility, I can do no more. A crayfish has primitive , primordial instincts to take advantage of feeding opportunities. Size may have prohibited it from taking fish so far, but that won't last forever. Just because you don't have a problem now doesnt mean you wont't have one in the near future, thats what i'm trying hard to tell you. I'm not saying it for laughs, i'm trying to stop you from getting an undesired fish death.

Theres nothing in your tank too big for a cherax cray or marron to take out. When the mood takes him, he'll dispatch them with ease, and usually at night. You don't keep species together where that can happen, its fundamentally neglectful care, like it or not. You can choose to ignore it, or do something about it. A good fishkeeper would do something about it before it happens. If the fish matter to you, you'll give it some thought. Denial of the problem won't make it go away. A severe risk is being run here, theres no avoiding it.
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