Back in 2014 I showed some pictures of my quite large CRS colony. At that time I was breeding for numbers just to fill a very large tank so the quality of the shrimp wasn't very important to me. Last year I decided to take it in hand to improve the quality and weed out all. The low grade shrimp. I ended with a much smaller colony so put them into 70 litre breeding tanks, added a couple of mid - high grade males and left them to it. Along the way I culled any low grade males and eventually low grade females . I'm happy to say I once again have a thriving colony of about 150-200 shrimp of mid to mid/high grade shrimp. Patterns initially were B & A with a few S and now they are basically S , SS and a few SSS . There is still a lot of room for improvement and I will be doing another big cull soon . I can see a few shrimp still have tiny clear sections but on the whole they are looking much better. I'm getting colour on the legs now too which is good. Hopefully in another year I might have more high grade shrimp