UTG is 19/16/3.5 solid tag 2p2'er, and he doesn't know that I know this, if it makes any difference. He should view me as a solid tag. SB is a fish. Thoughts?

Party Poker No-Limit Hold'em, $ Hero (4 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

SB ($512.20)
Hero ($632.50)
UTG ($591)
Button ($1295.26)

Preflop: Hero is BB with 5, 5. SB posts a blind of $3.
UTG raises to $24, SB (poster) calls $21, Hero calls $18.

Flop: ($72) 8, 3, 3 (4 players)
SB checks, Hero checks, UTG bets $51, SB folds, Hero calls $51.

Turn: ($174) J (3 players)
Hero checks, UTG checks.

River: ($174) 5 (3 players)
Hero checks...


PS: I know this is only 3/6, but the HS forum has been kinda dead recently, so I thought I'd post it here.