Yellow Shrimp offspring all female.

[bpmox]

Hi,

I have a colony of yellow shrimp that seem to have done fine. The colony is much larger now than it was 6 months ago when I first received the shrimp. My problem is that all my current shrimp are saddled females with no males. I noticed that as time went on the population became increasingly skewed toward females as it grew, but it wasn't until I cleaned the tank out the other day and moved the shrimp into a larger aquarium that I was able to see that the population was exclusively adult saddled females. No males or berried females.

They co-inhabited the tank with Indian Zebra shrimp, but those slowly died out.

Has anyone experienced this before?

[Neonshrimp]

Are there alot of young/juvenile shrimp in the tank? Has it only been a couple of days since you moved them to the new tank? Two of the things you will see suppress breeding/reproduction is lack of resources in a crowded shrimp population and changed/unfavorable environmental conditions. I hope the colony picks up again soon.