PokerStars - $0.50 NL FAST (6 max) - Holdem - 6 players
Hand converted by Holdem Manager 3 : http://www.holdemmanager.com

Hero (BTN): $50.00 (100 bb)
SB: $21.70 (43.4 bb)
BB: $50.00 (100 bb)
UTG: $22.65 (45.3 bb)
MP: $99.14 (198.3 bb)
CO: $118.08 (236.2 bb)

SB posts $0.25, BB posts $0.50

Pre Flop: (pot: $0.75) Hero has 8c 5c
3 folds, Hero raises to $1.25, fold, BB calls $0.75

Flop: ($2.75, 2 players) 6c 7c Ac
BB checks, Hero bets $0.87, BB calls $0.87

Turn: ($4.49, 2 players) Ts
BB checks, Hero bets $3.20, BB calls $3.20

River: ($10.89, 2 players) 6h
BB checks, Hero bets $7.00, BB raises to $23.23,

what do we do on this river? but not sure what are we hoping to be against when I call the raise? there is almost no lower flush he can have 67s very likely 1010,77 I do not think he will random bluff river vs my bet/bet/bet line? what is best to do in this spot?