Can CRS give birth to both baby CRS & Diamond?

**Ivan** · 22nd Dec 2006, 12:00

Hi, Need advice from friends...

I have 2 pregnant CRS gave birth to two batches of tiny shrimps two weeks ago, until recently I noticed that some of these tiny shrimps looks like mother CRS, but some of them have black & white stripes.

So is it possible to have a mixture of baby Diamond and CRS from one single mother CRS or must it be the entire batch either baby CRS or Diamond???

By the way, I have 4 CRS and 2 Diamond in one small tank.

**hwchoy** · 22nd Dec 2006, 12:40

of course, CRS are selective bred from Diamonds, so they have the same gene pool except CRS population have a overwhelmingly high expression of the xanthophores against melanophores. But the genes are still there, only recessive.

Let us know if you are familiar with general heriditary and genetics sciences.

**Ivan** · 22nd Dec 2006, 14:52

Hi Choy, Thanks for the explanation. Which means that if a female CRS got pregnant with a male diamond, their off-spring can be a mixed of CRS or diamond.

Sorry, I'm not familiar with general heriditary and genetics sciences.

**hwchoy** · 22nd Dec 2006, 16:17

CRS is a form of Diamond. Even if CRS breed with CRS there will be some chance that some offspring will express the melanistic (i.e. black colour) traits.

go check wikipedia for a quick lesson in hereditary. if a pure black form breed with a pure red form (e.g. some plants have such colour forms) then the offspring have 25% chance of being pure black, 25% chance of pure red, and 50% chance of some mixture. This is a simplistic model. Reality is more complex depending on how the traits interact and also the level of dominance of each traits.

**Ivan** · 3rd Jan 2007, 17:53

Just got a shot on this little Diamond Shrimp...

p1020210_std.jpg

p1020259_std.jpg

Sorry, pictures a bit blurr because this fellow is too small (about 3mm)...

**Neon Shrimp** · 6th Jan 2007, 09:52

Hi Ivan, Thanks for the nice picture of the little diamond shrimp

if a pure black form breed with a pure red form (e.g. some plants have such colour forms) then the offspring have 25% chance of being pure black, 25% chance of pure red, and 50% chance of some mixture. This is a simplistic model. Reality is more complex depending on how the traits interact and also the level of dominance of each traits.

Actually the diamond (black trait) is the dominant gene and the CRS (red trait) is the recessive gene. So if a pure daimond (double dominant gene) mates with a red (all are double recessive gene or else would be diamond if they had one dominant and one recessive gene) you would get all diamonds with one dominant and one recessive gene for each baby.

But if a diamond shrimp ( with one dominant and one recessive gene) mates with a CRS (always two recessive gene) then you should have have CRS (two recessive) and half daimond (one dominant and one recessive gene) babies.

Here is a link explaining it if you eant to take the time to read it:

http://www.shrimpnow.com/forums/showthread.php?t=230

**Ivan** · 8th Jan 2007, 16:32

Hi Neon Shrimp,

Thanks for the explanation and the information.

**MiSs PiGgY** · 10th Jan 2007, 13:41

wow....you've got a beautiful baby diamond.....

**Ivan** · 10th Jan 2007, 16:10

Thanks.

Will try to get some updated pictures soon.

**MiSs PiGgY** · 10th Jan 2007, 16:53

my crs gave birth to one diamond 2 days ago also

**denniswko** · 22nd Apr 2007, 01:44

Originally Posted by Ivan

Just got a shot on this little Diamond Shrimp...

p1020210_std.jpg

p1020259_std.jpg

Sorry, pictures a bit blurr because this fellow is too small (about 3mm)...

Your baby diamond look so cute and beautiful.

**Ivan** · 23rd Apr 2007, 14:53

Thanks Dennis, now my CRS/Diamond population is growing very fast, this baby Diamond is now more than 1 cm long...

http://www.aquaticquotient.com/forum...2&d=1177309422

**kjk** · 2nd Aug 2008, 18:33

Were reading all the info...thanks... very informative...
cheers

**kjk** · 27th Aug 2008, 11:08

Can I gather that the shrimps will not give birth to all shrimps but spread over few days? What I observe was a diamond shrimplets follow by about 3 pcs of CRS over few days. Unless they are from different parents.

Also how many pcs will i expect from one batch as average?

Thanks in advance to those experts...

**trevally** · 1st Sep 2008, 14:21

Hope the below info is useful. Got it from bestcrs.com

CRS= Crystal Red Shrimp
BEE= Bee Shrimp
BEE= Diamond Black Shrimp ( Black CRS )

CRS × CRS ＝100 ％ CRS
BEE × BEE ＝100 ％ BEE
CRS × BEE ＝100 ％ BEE （CRS ）
BEE × BEE（CRS ）＝　50 ％ BEE　50 ％ BEE （CRS ）
BEE（CRS ） × BEE（CRS ）＝　25 ％ BEE　50 ％ BEE （CRS ）25 ％ CRS
CRS × BEE（CRS ）＝　50 ％ BEE （CRS ）　50 ％ CRS

**owk688** · 12th Aug 2009, 01:32

thank you for your information.... i learn more now.

**tachyon** · 13th Nov 2009, 02:43

so the snow white / golden gene is a separate gene pool ?

**eviltrain** · 26th Jan 2010, 11:44

Originally Posted by tachyon

so the snow white / golden gene is a separate gene pool ?

From what i know is that Golden and Snow White came from another gene pool, as in different from the 3 ancestor red gene bee shrimps. this is the information that i knew from the web. Some even said that the breeder of Golden and Snow White is unknown. I think Silane will know more.

**silane** · 27th Jan 2010, 17:51

Originally Posted by tachyon

so the snow white / golden gene is a separate gene pool ?

Separate genes pool from what? Nowsday, most and almost all of the CRS has somehow involved with golden genes and their colors and traits can be better then cheapo Pure red line.