how big do rcs need to be to ship?

My colony is doing better than expected and I need to get rid of some. How big do they need to be to survive shipping and is this size different from what people expect when they buy?

 

From what I have heard, RCS do better when they are small. It's easier for them to acclimate as youngsters. They are pretty resilient little buggers too =)

 

I got mine from Rogue when they were less than 1/2 inch.

 

I received RCS of varying sizes. A couple of adults and many tiny ones. I honestly do not believe size is an issue so long as they price is fair.

 

I ship them at about 1/2 inch.

 

I'm late to this discussion as I only joined today!

When I bought cherry shrimp I got them in all sizes, one full grown female 3 medium and the rest of various baby sizes the smallest two being about half a centimeter in length.... all the small ones are the ones that seem most adjusted and happy in my tank. They are the ones that don't hesitate to zip around and explore at will. My full grown one is constantly hiding under the anubias and only comes out to eat. The 3 mediums prefer to explore along the bottom and java ferns only.

As a customer, I am the most pleased at having received the smallest ones as they have been nothing but a joy.

Also, I received 12 in one shipment and not a single one died in transit (despite the water they came in having gotten quite cold) and far as I know none died acclimating to my tank either (though I never see them all at once either!)