So it's been nearly half a year since I got my rummynoses and only six out of the 20 of them have reached the size of about 5cm long. Every website I look on it says rummynose should reach this size but the majority of mine are still around 3-4cm and quite skinny. I hope I haven't stunted their growth in anyway, I feed them once a day. Each feeding I feed them until they stop going after the food vigorously. It's almost half year so I'm guessing they've all done their growing now? Anyone know?