Dwarf and small crayfish with pics/vid - The Planted Tank Forum
 
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post #1 of 9 (permalink) Old 09-14-2008, 02:38 AM Thread Starter
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Arrow Dwarf and small crayfish with pics/vid

I have been finding several different types of crayfish in some of the fast flowing streams. The streams that are located along the Kentucky Tennessee border.

The two kinds in the pictures come from the same stream. The kind with red tipped claws looks to get about a maximum size of approx. 2.5 inches. The ones with yellow tipped claws and yellow banding appear to be a dwarf, obtaining a maximum size of approx. 1.5 inches.

Both types live under small rocks in the open water of the stream. They are also very aggressive feeders and seem to be able to defend themselves easily versus fish up to 6 inches long.

I know there are over 75 different kinds of crayfish in Kentucky and Tennesse, but if anyone has idea of what they are I would like and ID.


Pictures of Red tip claw crayfish







Yellowtip claw dwarf crayfish


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post #2 of 9 (permalink) Old 09-14-2008, 04:05 AM
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Very cool!

How long have you had them?

Have they bred for you?

www.nanfa.org or www.nativefish.org would be good places to look for an ID.





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post #3 of 9 (permalink) Old 09-14-2008, 05:39 PM Thread Starter
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What I have found so far is that they both appear to be an Orconectes.
I have only had them several weeks. They seem to very hardy and active during the daytime.

I am pretty sure they will breed fairly easily. I have several berried females already. Maybe the temp/condition change triggered them breeding. They seem to be pretty well suited for aquarium life and so far they leave the plants alone.

Also when they molt they pile small rocks around them and hide until their shell hardens.
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post #4 of 9 (permalink) Old 09-14-2008, 06:06 PM
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Post the pics on www.bluecrayfish.com, they should be able to help you get a positive id on them. They are cute though

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post #5 of 9 (permalink) Old 09-15-2008, 01:42 AM Thread Starter
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The first one looks to be Orconectes (Procericambarus) durelli according to the folks on www.bluecrayfish.com
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post #6 of 9 (permalink) Old 09-15-2008, 12:26 PM
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Any idea how big they get? I googled them, but there doesn't seem to be much info on them. They are beautiful crays!

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post #7 of 9 (permalink) Old 09-15-2008, 11:26 PM Thread Starter
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Quote:
Originally Posted by MOsborne05 View Post
Any idea how big they get? I googled them, but there doesn't seem to be much info on them. They are beautiful crays!

The O. durelli that I have and the largest ones I have seen around here look to be about a maximum size of 2.5 inches from the tip of the rostrum to the tip of the tail. They may get larger but that is the size of the largest one I have and largest I have seen in the stream.

I was searching around for some more info on them and ran across this guy http://livingaquatic.com/index.php?cPath=21 selling them $25 each

I still have not got any more info on the other one, but It does not appear to be a dwarf, I found one the other day that was almost 2 inches.

One of the O. Durelli is berried, and I saw a tiny crawler off of her.
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post #8 of 9 (permalink) Old 09-16-2008, 12:26 AM
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Wow, congrats on the berry!

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post #9 of 9 (permalink) Old 09-16-2008, 12:27 AM
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Just as a side note. I am one of the mods at Bluecrayfishforums. Very nice people here! Don't be shy to ask. And we even have pros who do IDing all the time!
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