My chocolate chip starfish is laying at the bottom for a few days acting weird. Most of the time his feet are curled up, but sometimes he relaxes for a bit. I target feed him so probably it's not that he is starving. He won't stick to the glass. My salinity is around 1.019 which i know is low but i only found out a week ago and I'm gradually increasing it every day. Is there anything you can think of that is causing this? Maybe other fish?