Party, $0.10/$0.25 No Limit Hold'em Cash, 6 Players
SB: $16.10 (64.4 bb)
BB: $55.08 (220.3 bb)
UTG: $7.35 (29.4 bb)
BTN: $2.72 (10.9 bb)
MP: $13.49 (54 bb)
Hero (CO): $34.71 (138.8 bb)
Preflop: Hero is CO with K♣ J♠
UTG folds, MP raises to $0.50, Hero calls $0.50, BTN calls $0.50, SB calls $0.40, BB calls $0.25
Flop: ($2.50) A♣ J♣ 3♦ (5 players)
SB checks, BB bets $0.50, MP folds, Hero calls $0.50, BTN folds, SB calls $0.50
Turn: ($4) J♦ (3 players)
SB checks, BB bets $0.25, Hero raises to $2, SB calls $2, BB folds
River: ($8.25) 2♦ (2 players)
SB bets $7.84, Hero ?
BB is playing 26/12/8.4/2.7/340, SB is unknown playing 48/19/0.0/1.6/23 [vip/pfr/3bet/agg/hands].
What to do on the river? Is fold standard vs unknown, or too weak?