Well if yah win the auction get us some clear pics. Then if they are marbles sell us the babies.
Self cloning "blue" crayfish?
- Thread starter screaminleeman
- Start date
This guy selling them on Aquabid explains it: http://www.aquabid.com/cgi-bin/auction/auction.cgi?fwinverts&1283461106
According to him, they can all be blue. It's all dependant upon the hardness of the water they are in.
Hard = Reddish
Medium = The usual Brown we see
Soft = Brown with some Blue highlights
Very Soft = Blue
Will be ordering some in the next week or two so I'll test it out when I get them. Been a while since I got to do a science experiment.
According to him, they can all be blue. It's all dependant upon the hardness of the water they are in.
Hard = Reddish
Medium = The usual Brown we see
Soft = Brown with some Blue highlights
Very Soft = Blue
Will be ordering some in the next week or two so I'll test it out when I get them. Been a while since I got to do a science experiment.
The marmokrebs usually turn blue after they molt and turn brown again after a few days. They are all genetically identical so the guy on aquabid is just being a clever marketer. I have a few hundred of them and at any time a portion of them are blue.
Speaking of having a lot, I have some for sale if anyone is interested
If ya'll have any questions about them I will do my best to answer. I've been keeping them a while and have talked with others with first hand experience.
Speaking of having a lot, I have some for sale if anyone is interested
If ya'll have any questions about them I will do my best to answer. I've been keeping them a while and have talked with others with first hand experience.
Adria;4535385; said:The marmokrebs usually turn blue after they molt and turn brown again after a few days. They are all genetically identical so the guy on aquabid is just being a clever marketer. I have a few hundred of them and at any time a portion of them are blue.
Speaking of having a lot, I have some for sale if anyone is interested
If ya'll have any questions about them I will do my best to answer. I've been keeping them a while and have talked with others with first hand experience.
i saw your ad, that's what prompted my search.
what's your breeding setup?
how do they do with larger fish (are they predatory/fin-nippers)?
ScatMan;4535369; said:^so did you ever get around to ordering them?
Yeah, I got 8. Can see the tank and some pics here: http://www.monsterfishkeepers.com/forums/showthread.php?t=358952
- Water hardness is around 220 mg/l CaCO3. "Moderately Hard" on test kits.
- Of the 8, all of them have molted at least twice.
- All 8 in the same tank.
- All originally came the exact same tan/brown color.
- 3 now have somewhat blue legs.
- 1 of those 3 has a bluish tint to the main carapace.
Will have to wait for reproduction before I can do any real tests. Don't want to risk any of the original 8 dying or something. A couple of them should be ready to berry any time now. Once I get some offspring, I'll get some 1 gallon jars set up identically except for water hardness. Will have jars at 0 mg/l, 50 mg/l, 100 mg/l, 150 mg/l, etc up to 350 mg/l. I have a water distiller so getting 0 mg/l is easy, and Kent's liquid calcium can be added to get the exact hardness I want. Will probably do 2 crays in each jar just to see if there is variance other than water hardness. All will be fed the same things at the same times.
Assuming color is mostly based on hardness, I should get a nice rainbow of 16 crays from Blue->Tan->Red.
As far as agression, I haven't really seen any yet in the few weeks I've had them. I even stuck in some fancy guppies with them as a test, and they haven't bothered the guppies at all yet. The guppies swim down in all the nooks and crannies of the rock work right alongside the crays. I did find a cray eating a guppy the morning after I added them, but that guppy wasn't looking so good the night before. I'm fairly positive it died of natural causes.
If the crays touch each other, they jet away usually. If running into each other head on, occasionally 1 will stand it's ground and open it's claws in a 'come get me' pose. The other will walk around it to avoid it.
For crays, they do seem very docile. I still wouldn't trust them 100% though. If I skipped feeding them for a week, I bet the guppies would start vanishing.
