So I've heard. I think that is not as much an issue as finding them though. Literally no one has them and if they do I don't think I have the money to buy. This build I am doing so far has cost me under $150 but if I want to eat next semester I will have to skimp.
I read that they will almost mix. It's strange how caridina species will mix almost like incomplete dominance but neocaridina is standard genetics like dominant masks recessive. Personal opinion is genetics should stop looking at peas and fruit flies and start looking at shrimp lol