Missed this read - maybe you can do better

[jat850]

Live 2/4 game at Commerce. I know I got this read of Villain's hand wrong. I would like to know if you could do better and explain your answer.

Villain is SB. He is LAG, but not stupid. BB is a fish, soon to be filleted. Hero is late MP with AKo.

PF: UTG folds, EP 1 calls, EP2 calls, MP1 folds, Hero raises, CO and Button fold, SB completes, BB calls, EP's fold. 3 players, 7 sb.

Flop: A23 rainbow. Checked to Hero who bets, SB raises, BB fish folds, Hero just calls. 2 players 10 sb.

Here is where I had trouble. I couldn't figure out a range a likely holdings for Villain so I brain locked and just called. What do you put him on and why? The only things I thought of I really didn't like what with the connected flop even though I paired my Ace. Hand was just checked through on turn and river cards which were both blanks. I had no idea whether I was ahead or behind so I justed checked it down.

I'll post Villain's actual holding after a few replies.