I've had my kuhli for about a month now and got used to him going crazy wriggling everywhere and then settling down under his half coconut with java moss on. But over the last couple of days he is now almost vibrating or spazaming insted of wriggling then laying on its side and I don't know what is wrong, is he not long for this world?

Any suggestions or ideas on what to do will be much appreciated as I'm really attached to the little guy.