NL25: TPHK auf paired board

[von7thal]

PokerStars No-Limit Hold'em, $0.25 BB (6 handed) Poker Stars Converter Tool from FlopTurnRiver.com (Format: ITH Forums)

UTG ($17.35)
Hero ($27.40)
CO ($12.85)
Button ($24.40)
SB ($14.60)
BB ($15.65)

Preflop: Hero is MP with :kd, :js.
UTG calls $0.25, Hero raises to $1.25, CO calls $1.25, 1 fold, SB calls $1.15, 1 fold, UTG calls $1.

Flop: ($5.25) :6s, :kc, :6d (4 players)
SB checks, UTG checks, Hero checks, CO bets $2.5, SB folds, UTG calls $2.50, Hero calls $2.50.

Turn: ($12.75) :8d (3 players)
UTG checks, Hero checks, CO checks.

River: ($12.75) :2s (3 players)
UTG bets $5.75, Hero ?

villain: 27.3/0/3.0 über 22 hände.
flop check gut?
weil ich flop gecheckt habe muss man river fast callen?
ev. noch fold weil mwp.