Catfished on a dating site - what to do now?

So I was speaking to this cute guy online and I gave him my number and he text me today. He has sent me a selfie of himself and ...erm...it looks NOTHING like his online profile photo - which admittedly was taken from slightly further afar.Shall I tell him that he isn't what I thought he would look like close up? I feel like I've been tricked. On our messages I have said I want to meet up with him - what's the bet way of approaching this as I don't want to now.