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Old 01-29-2011, 01:31 PM   #11 
Dragonlady
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The crayfish is not compatible with a betta. As a kid, I used to keep crayfish as pets that I caught in my backyard. I fed them minnows that I also caught if that answers your question.
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Old 01-29-2011, 03:18 PM   #12 
Here Fishy Fishy Fishy
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Crayfish are great because they'll keep your tank really clean... of everything, including other fish! I found this out the hard way, when I got a two gallon aquarium for my oldest daughter (who was a toddler at the time).

We got two gold fish and a tiny crayfish (to clean up after the goldfish). The next day, my daughter says, "Where did the fishes go?" I looked in the tank and told her the fish had gone on vacation.... permanent vacation... 0_0
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Old 01-31-2011, 10:45 PM   #13 
dramaqueen
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How sad! lol
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Old 02-01-2011, 02:41 AM   #14 
indjo
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I wouldn't recommend slow or long finned fish together with crays. They're instinct drives them to catch whatever comes near their cave/hideout/mouth. I used to have 5 species/types.

Some crays, like red claws that is said can grow over 12" (body only) are more docile if they've never tasted fish before they reach 6". They're more aggressive when young/small. I once kept 6" crays with live bearers, barbs and angelfish and they would let the fish "clean" them. But once they've tasted flesh (they weren't fed during the 2 days while I was away)- that's it, no more community.

Other species are more aggressive and will always hunt. In fact some individuals would only eat fresh fish or starve to death (caught from the wild - IME).

Tank size should be at least 4x body length, hiding places (specially if there's more than one cray) and pumps. Small 1/2 - 1g tanks aren't suitable for adult crays (small species grow to 4 - 5" body only). Some like to climb, so lids should be used (they can climb up air line tubes or even aquarium seals). I suggest water filled only 2/3 of tank because once they're out of the water, they often would stop climbing (not always).
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Old 02-01-2011, 07:26 AM   #15 
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indjo,

Thank you for that informative post! :D
Wish I knew all that 25 years ago, lol!
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