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#360605 12/20/13 06:51 AM
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I would like to put some crayfish in my pond to feed the LMB and maybe even reproduce. I would like to hear opinions on this.

We have 12 different crayfish species in MD, 8 native and 4 non-native. There are even crayfish in the next county over that we don't have here in my county. This is according to the DNR.

I would like to stock the native species from around here as my first choice. I don't want the burrower type. Already have those.

Every freshwater creek, pond, stream, swamp, ditch and waterhole around here has crayfish. They are easy and fun to catch with traps and nets. But trying to ID the exact species is a different story. All ponds and creeks around here have the holes on the bank with mud chimneys. I'm thinking they are devil crayfish. Not suppose to be common crayfish, or virile crayfish here in this county, but they are everywhere else.

The only choices I can see other than trapping wild crayfish is two choices for buying them, Papershells from Smith Creek or crayfish from Zetts.

Would papershells be OK here? Am I too far south?
Does anyone know the exact crayfish species that Zetts has?


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I doubt that even Zetts knows or will truthfully admit they don't know the scientific name of their crayfish. They may have a farm name for them. Few people know how to identify crayfish without good training. Unless real well versed on crayfish it is very doubtful that their crayfish cultures are pure and their population have been contaminated by various sources, which is very common with many other fish farms due to lack of specific knowledge about crayfish identification. "A crab is a crab". If you are concerned about not introducing more burrowing crayfish then I think you should spend some time learning what specific external body features are unique to your preferred crayfish. If I had only two choices of Zetts and Smith Creek I would choose Smith's.

Since you mention Maryland DNR and crayfish you already may be aware of this very good identification guide the MD crayfish, but here is a link to it:
http://dnr.maryland.gov/streams/pdfs/keytothecrayfishesofmd_8_18_10.pdf

I can help with answers if you have questions about separating the crayfish genera and species. Just from casual perusal of the "key" it appears the best MD native crayfish for your location is the Orconectes virilis - Virile crayfish.

Last edited by Bill Cody; 12/20/13 10:25 AM.

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I've stocked ponds with crayfish from Smith Creek and have never seen a chimney.

I agree with Bill on people not knowing or caring what they sell. I know a bait dealer that is selling "softshell" crayfish that are freshly molted rustys.


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Some super markets, at least here in Texas, sell crawfish live for like 5$ a pound and they usually say the specific species. They may not be native though... I'm thinking about adding some of them to my pond as well.


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What would the best type of crayfish be for human consumption in a colder climate? I have a small pond, maybe 1/10 acre, with no fish. It would be fun for the boys to raise some crawfish in there for them to catch. Any suggestions?

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Thanks for that info Bill. Yea that's the link about crayfish that I was looking at. As you can see there are species in the next county over that we don't have here. At least according to their maps.


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Originally Posted By: Culummills123
Some super markets, at least here in Texas, sell crawfish live for like 5$ a pound and they usually say the specific species.


I think those are usually reds here in Texas.

I had some ordered, but cancelled after several Pond Boss veterans told me it was not a good idea due to Reds being known for burrowing into pond dams.


Fishing has never been about the fish....

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Originally Posted By: adam klaus
What would the best type of crayfish be for human consumption in a colder climate? I have a small pond, maybe 1/10 acre, with no fish. It would be fun for the boys to raise some crawfish in there for them to catch. Any suggestions?


I read that in Louisiana where they do big time crayfish farming for eating, they mostly use red swamp crayfish and to a lesser extent white river crayfish. We have both of these around here also. These have been introduced to many other areas but I dont know about way up where you are. I dont even know if all crayfish taste the same.


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I found a good resource on crayfish farming-
aqua.ucdavis.edu/DatabaseRoot/pdf/CRAWPM.PDF

Seems like the burrowing would be a problem. Are they any situations where crayfish and embankment ponds could coexist in a practical way?

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Adam seems like you are looking for the same thing as me. The kind of crayfish that don't burrow much.

I remember over 20 years ago I picked up a couple dozen crayfish at a fishing/bait store. They were in an aquarium, just like the minnows. They were big and red and I used them for bass fishing. Anyhow I had about 10 left at the end of the day and I dumped them in my friends pond. Anyhow, I went back fishing a few days later and I couldn't believe it, there was about 10 big holes on shore right in the exact spot I dumped them. They must have come right out of the pond and made holes immediately after I put them in.


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Those Red Swamp Crayfish are good eating though. I caught them a bunch in California some years back. But I wont risk my embankment dam for a few meals nowadays!

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The red swamp and white river crayfish are both raised for human food. Neither usually make deep burrows above water unless the pond is drying up which is mentioned a couple times in the link. White River one can get slightly larger than the Red swamp. So if you are interested in using a crayfish for food consider the red swamp or white river. Both get large and it would take a pretty big bass to eat the full grown adults. The following informative link provides more info than most of us would ever want about these two species. Note the info in the section about Burrow Ecology .
https://srac.tamu.edu/index.cfm/event/getFactSheet/whichfactsheet/195/

Last edited by Bill Cody; 12/20/13 10:18 PM.

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3.5 crawfish per pound??? Those are some baby lobsters!


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It looks like papershells are the ideal crayfish for ponds if you don't want burrowing. I called Smith Creek yesterday, they said they cant ship until June. The guy said they have shipped as far South as Alabama, So I guess they would be OK here in Southern Maryland.


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I live in Louisiana and catch crawfish part time I don't have fish yet but should start stocking in two weeks I was catching 40-50 sacks a day mostly red crawfish so I ended up putting around 5 sacks in my pond to give them a little head start I'm new at all this and have never owned a pond before so hopefully I'm not messing up

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Originally Posted By: Bill Cody
I can help with answers if you have questions about separating the crayfish genera and species.


Bill I am on my third book of Alfred Russel Wallace who was a British naturalist, explorer, geographer, anthropologist, biologist & taxidermist with a similar education as yourself and did most of his work in the mid 1800's. I had been confused with genus and species. So I finally took the time to look it up after you mentioned it. The first scientific Latin word is for the genus and the second word is for the species. And this may change to what is called clade.

I was wondering if you have come across any new species in your work?




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John - Yes, I found a new diatom that was assigned a new genus and specie. Two Univ of Michigan algae professors and I named it: Cyclotublicoalitus undatus from South Carolina - Par Pond.
http://www.tandfonline.com/doi/abs/10.1080/0269249X.1990.9705101#.U8xtA_ldXTo

Last edited by Bill Cody; 07/21/14 08:30 AM.

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Originally Posted By: Bill Cody
John - Yes, I found a new diatom that was assigned a new genus and specie.


That's fantastic Bill. The forum is fortunate to have you.


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Bill can you post a pic ?
















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Here are images of Cyclotublicoalitus undatus via Bill.




Last edited by Bill Cody; 07/22/14 10:56 AM. Reason: word edit















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Cyclotubicoalitus undatus, Genus et Species Nova. E.F.Stoermer, J.P.Kociolek & W.Cody is the correct technical name for this diatom. It was described and published in Diatom Research 1990. Vol 5 (1), 171-177. It was found within a bloom of numerous other planktonic centric diatoms in an eutrophic cooling reservoir in South Carolina. I note this because there appears to be no images for this specie on the web. So maybe if the search engines gather this information it will now be available.

Last edited by Bill Cody; 07/22/14 11:12 AM.

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Bill I did try to Goggle Cyclotubicoalitus undatus and only found what was just posted on Pond Boss. I hope I don't sound too stupid but was this found by sorting through micro plants with a microscope and what might you have been looking for when this discovery was found?


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John - Evidently the link to the pictures worked. Now all the freaky nerd diatom algae people will be visiting Pond Boss forum. The name referred to the circle of fused tubular processes on the valve rim.

This new species was found during an ecological water quality monitoring study of the cooling ponds. It basically bloomed at about 10% occurrence during the month of May and was growing with other centric diatoms indicative of eutrophic water: Stephanocyclus meneghiniana, Cyclostephanos tholiformis, and Aulacoseira granulata. If you want to see a picture of it with the other common diatoms in the bloom just let me know.

Ranges of Pond chemistries were (mg/L): alkalinity 14-16 mg/L, Ortho Phos 0.003-0.03, Total P 0.59-0.84, pH 7.0-9.3, Temp 69-73F.

Last edited by Bill Cody; 07/23/14 08:52 AM.

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Originally Posted By: ewest
Here are images of Cyclotublicoalitus undatus via Bill.





I want a t-shirt with Cyclotublicoalitus undatus featured and autographed by the good Dr. Bill Cody. Jesse West foundation bid item for PB VI!


Many men go fishing all of their lives without knowing that it is not fish they are after. ~ Henry David Thoreau

[Linked Image from i1261.photobucket.com]


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I'm sorry for hijacking the crawdad thread but Bills background was so similar to the book's author I was reading that I felt I was reading about Bill. One more question Bill. The diatom being an early part of the food chain and the two valve walls being inorganic silicon then I suppose the rest of the diatom would have to be organic to be a food source wouldn't it?


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