Last night when I took him out he was acting defensive until I got him out and then he relaxed. But today he is VERY aggressive. He was hissing and striking at the tank. I picked him up carefully and he coiled around my wrist as hard as he could and tried to bite me a few times. Its now been 3 days since feeding. I am really shocked to see such a change in him from the very gentle snake he was at first. How do you hook train them?
If he is hissing, is that more of a defense thing than a feeding response?

Thanks in advance for the help.