Bluebolts posted on this a few years back, but breeding deformed shrimp here in Australia is sadly currently a reality that some people will encounter. Be aware what a balloon head and an Open skirt looks like. The shrimplets look very slightly abnormal if you don't know what you are looking for, once you know how to spot this, you can cull immediately. I get it, I really do: shrimp are expensive and adorable and that is why people are reluctant to cull. What is a relatively rare occurency,