NL100: bluffraise river on 4 flushed board?

[BetYourLife]

Party Poker - No Limit Hold'em Cash Game - $0.50/$1 Blinds - 6 Players - (LegoPoker Hand History Converter)

SB: $43.05
BB: $137.12
UTG: $50.00
MP: $68.55
Hero (CO): $100.00
BTN: $16.41

Preflop: Hero is dealt Q[img]/images/graemlins/heart.gif[/img] Q[img]/images/graemlins/club.gif[/img] (6 Players)
UTG checks, MP folds, <font color="red">Hero raises to $5.00</font>, 2 folds, BB calls $4.00, UTG folds

Flop: ($11.50) T[img]/images/graemlins/spade.gif[/img] 3[img]/images/graemlins/spade.gif[/img] 4[img]/images/graemlins/club.gif[/img] (2 Players)
<font color="red">BB bets $7.00</font>, Hero calls $7.00

Turn: ($25.50) 7[img]/images/graemlins/spade.gif[/img] (2 Players)
<font color="red">BB bets $15.00</font>, Hero calls $15.00

River: ($55.50) J[img]/images/graemlins/spade.gif[/img] (2 Players)
<font color="red">BB bets $20.00</font>, Hero???

I think we shold raise flop here. Line is very bad.
But river decision. It looks like a flopbet. TPTK or a set cannot call us here and will have to muck. push or muck it?
villain is tag.

[PartysOver]

yes raise flop

do you have stats/reads on bb?

i don't like raising these rivers, i have my own "theory" which is basically no one folds a flush to a standard raise here.