Where are you based?
As crabby says you will probably need to do some diy though you may find something you could use sold for Betta fish on ebay or amazon maybe? Anything that shares water may be more difficult to stop shrimps moving between sections any way they can find!
If you want to be using a single set of equipment, you'll need to go DIY. I would say make some sort of frame that fits snugly inside the tank, and run really fine netting over the frame, for the dividers? Or possibly just a big sheet of filter sponge that you can cut up. The latter has less water flow though.
I am doing an experiment with my cherry shrimp on temperature dependant sex determination and I need a divided tank
obviously the tank won’t need to be too big as I am just housing 1 male and 1 female in each section.
ideally, I am looking for a rectangular tank divided into 3 sections so that I can breed 3 pairs at once. The sections will need to share water as I only want to use 1 set of equipment. But if they’re sharing water, I am concerned that after breeding, shrimplets will be able to move into each section through the holes which would ruin my experiment.
Does anybody know where I can get a divided tank suitable for my experiment that isn’t too costly or anything I could use as an alternative? Thanks
I assume that they are reverting to wild type, though I've not had them looking quite like that, but I don't have blues, just the red. If they weren't from an established single type tank it can even happen with all shrimps that are one colour as the parents could be mixed or carrying mixed genes!
You are probably best to remove the ones you don't like but if you are already at this stage it will probably happen more often and in larger numbers as tie goes on? As it is a mixed tank anyway, just removing the ones that are turning won't stop the problem as the reds and blues will cross breed anyway?