Sprae - TB's a more sensitive and difficult in comparison to CRS's....so definite progression would be cherries, CRS's, TB's ......Like many, lots of $$$ spend with no success, but with failure comes wisdom/experience, and eventually hopefully success. fishmosy - $$$ is unfortunatley one of the main motivators of decisions. So a person venturing into TB's may not want to spend the $ on an immediate colony, and purchase just 1 TB, to prove and gain confidence of their shrimp breeding skill. If a hobbyist just want to purchase 1 TB, I tend to recommend getting a male...this way, he can berry as many female CRS/CBS, and get the TB genetics into your breeding stock. There are more potential issues with berried females, so to be on the safe and productive side of the breeding equation, having one berried TB female vs several berried CRS female off a TB gives you more numbers and favourable odds. TB x Mischling will give you a good potential of TB's within it's off springs, whereas mischling x mischling = potentially 0.