Let me tell you, cold, clammy mudskippers are very yucky to pick up. I picked him up and put him in the water. I don't think there is much else I can do. His eyes are a little red but he is up and splashing around. It was probably a 4 foot drop to the floor and he was 10 feet away from the tank. I have no idea how he got out. I hope he will be okay. 
