neo's are the fastes. caridina take a while to grow to breeding age and tiger seem to take longest. some take about 9 months to reach breeding ages. crs tend to take 3-4 months or the types i have had seem to take about that long. grade on them really does not matter with crs they all start breeding about the same age. im not sure with tb though dont have my hands on those yet
I already have tangerine tigers, and they do breed fairly fast. Maybe a slight bit faster than CRS/CBS. The slowest breeders I have are Royal Blue Tigers.
Any other non-mainstream/oddball shrimp that might breed pretty quickly? I've been keeping shrimp for years and have a lot of experience with the well-known varieties (And own almost all of them), but I had never heard of Malaya shrimp until 2 days ago. That's the kind of varieties I'm looking for.