I had searched for quite a while on where to find mandarins that 1. I was comfortable buying 2. That would hopefully eat mysis. I happened to find pennys website and those criteria were met, my fish arrived today both happy and healthy and extremely well packaged. I know ordering these animals online and having them shipped to your house is a bit nerve wracking, but this whole process (due to penny being extremely helpful and ensuring they were packed well) was easier than going up the street to the local shop. I'm also confident in the health of my new fish!