Second nut flush on paired board in 3bet pot against fish 160bb deep

** Hand History for Game 104881397693 ** (Poker Stars)
$25.00 USD PL Omaha - Tuesday, October 01, 09:47:49 ET 2013
Table Thyestes 4 (Real Money)
Seat 1 is the button
Seat 1: BabaCloanta ( $23.75 USD )
Seat 2: benafyd ( $46.02 USD )
Seat 3: cipher2 ( $40.13 USD )
Seat 4: jovani.padua ( $28.40 USD )
Seat 5: SrixXxon ( $24.41 USD )
Seat 6: wtew4 ( $26.88 USD )
benafyd posts small blind [$0.10 USD].
cipher2 posts big blind [$0.25 USD].
** Dealing down cards **
Dealt to cipher2 [ Kd Kc 9d Tc ]
jovani.padua folds
SrixXxon folds
wtew4 raises [$0.75 USD]
BabaCloanta calls [$0.75 USD]
benafyd calls [$0.65 USD]
cipher2 raises [$3.50 USD]
wtew4 calls [$3.00 USD]
BabaCloanta calls [$3.00 USD]
benafyd calls [$3.00 USD]
** Dealing Flop ** [ 6h, 7s, 6d ]
benafyd checks
cipher2 checks
wtew4 check c/c s
BabaCloanta checks
** Dealing Turn ** [ Qd ]
benafyd checks
cipher2 bets [$7.80 USD]
wtew4 folds
BabaCloanta folds
benafyd calls [$7.80 USD]
** Dealing River ** [ 4d ]
benafyd checks
cipher2 bets [$12.30 USD]
benafyd calls [$12.30 USD]
cipher2 shows [Kd, Kc 9d Tc ]
benafyd shows [4c, 7c 6s 8s ]
benafyd wins $53.20 USD from main pot

I think pre flop, flop and turn are std. Not sure about river.I thought that his c/c turn range is something like a non boat 6 with some flush draw. Villain is 67/0 over 6 hands.