Need advice on my snakes behavior

[Nicesnakes]

Hello, so I just joined this site because my snake is acting kinda strange, I've only ever owned 1 snake so I'm not that experienced and hoped some one could help.

So I have an albino/candy cane morph corn snake, 2 years old, I'm not sure gender/sex, possibly female judging by the tail shape but I've always called him "he." So he's always been a very even tempered snake, never hissed at me, only ever rattled his tail twice since I've had him (since he was a baby.) The only thing is he gets anxious if I hold him too long but never aggressive.

Just now I was feeding him and went to pick him up to put him in the feeding tank and he bit me, didnt leave a mark, but I went to pick him up again and he went towards me like he was going to strike. And he was kind of coiled with his tail up in an aggressive position so I just fed him in his tank.

Is there any reason he is acting like this suddenly? I dont know if this is a stupid question but he's never acted like this before so I don't know what's up with him. Any help is much appreciated.