Should I have bluffed the river?

He snapped called the Turn Bet and then checks the river.

Merge – $0+$0.00|<> NL (6 max) – Holdem – 5 players
Hand converted by PokerTracker 3

SB: 2,225.00
BB: 1,800.00
UTG: 1,856.00
Hero (CO): 1,755.00
BTN: 2,508.00

SB posts SB 25.00, BB posts BB 50.00

Pre Flop: (75.00) Hero has  8 4

UTG calls 50.00, [color=red]Hero raises to 185.00[/color], fold, SB calls 160.00, fold, UTG calls 135.00

Flop: (605.00, 3 players)  2 5 J
SB checks, UTG checks, Hero checks

Turn: (605.00, 3 players)  T
SB checks, [color=red]UTG bets 100.00[/color], [color=red]Hero raises to 375.00[/color], fold, UTG calls 275.00

River: (1355.00, 2 players)  9
[color=red]UTG bets 100.00[/color], fold

UTG wins 1,355.00