NL25: Can i call this river bet with 77?

[seano34]

Villain is a fish I have on my buddy list that I joined the table to get, and managed to get position on him. He is 42/9/1.7

My notes say to beware small donk/calls and c/r. As they are usually a draw (Flush/oesd) or a made 2pair/set. Can I (should I) call this river? The turn check made me lean towards 78s or possibly 9x (less likely). The 5 on the river is not a card I wanted to see however, nor the half pot 'value bet'

Party Poker, $0.10/$0.25 NL Hold'em Cash Game, 5 Players
LeggoPoker.com - Hand History Converter

BTN: $33.34
SB: $31.75
BB: $19.68
Hero (UTG): $27.04
CO: $40.43

Pre-Flop: 7[img]/images/graemlins/diamond.gif[/img] 7[img]/images/graemlins/heart.gif[/img] dealt to Hero (UTG)
<font color="red">Hero raises to $1</font>, 3 folds, BB calls $0.75

Flop: ($2.10) 6[img]/images/graemlins/diamond.gif[/img] 9[img]/images/graemlins/heart.gif[/img] 2[img]/images/graemlins/club.gif[/img] (2 Players)
BB checks, <font color="red">Hero bets $1.50</font>, <font color="red">BB raises to $3</font>, Hero calls $1.50

Turn: ($8.10) Q[img]/images/graemlins/spade.gif[/img] (2 Players)
BB checks, Hero checks

River: ($8.10) 5[img]/images/graemlins/club.gif[/img] (2 Players)
<font color="red">BB bets $4.75</font>