Starbust is my granddaughters baby. We have had him 2 months and I'm guessing he was about 3 months when we got him. He seems to have doubled in size and is now around 6" long. Everything seems fine apart from his forward facing gills. Does this definitely mean he is stressed or could it just be normal for him? I have now put foam over the internal filter outlet to keep the water flow down but the filter is quite noisy and the ammonia levels are fine.