I got a snowflake eel a few months back and it has been very healthy. It was eating, swimming around the tank. I just saw it laying upside down on the sand and I thought it was dead. I went to net and it swam into a cave. It looks like it lost control of its head and it’s swimming very strange. It’s also barley moving and I tried to feed it but it had no reaction. It’s around 10inches long and in a 90g with plenty of live rocks.