My puffers wont eat and Im afraid they are going to die. When I came home today I saw one laying at the bottom of the tank barely moving. I thought it was dead but I tapped on the tank and it moved. I have tried feeding them freeze dried brine shrimp, frozen food and tetra pellets nothing works. I even gave them snails and they wont eat them so now I have snails roaming around in there and eggs all over the tank. They ate tubifex worms but only once and never again since then. I dont know what to do with them. All they do is look at the food and swim away. Is there anything else I can try? They look so skinny and unhealthy and keep swimming into the tank.. Can someone help me with this I dont want to lose them..