Would you call this or not and why? No read on villains..

***** Hand History for Game 2340082465 *****
$400 NL Hold'em - Sunday, July 10, 05:12:51 EDT 2005
Table Table 54946 (6 max) (No DP) (Real Money)
Seat 3 is the button
Total number of players : 6
Seat 1: R_SVD ( $436.04 )
Seat 3: Johnlink ( $371 )
Seat 4: GiorgosK ( $409.95 )
Seat 5: MRBIGTR ( $270.5 )
Seat 6: winningAA ( $90.2 )
Seat 2: Kingfish__ ( $192 )
GiorgosK posts small blind [$2].
MRBIGTR posts big blind [$4].
** Dealing down cards **
Dealt to Kingfish__ [ Qh Ah ]
winningAA folds.
R_SVD calls [$4].
Kingfish__ raises [$15].
Johnlink folds.
GiorgosK calls [$13].
MRBIGTR folds.
R_SVD calls [$11].
** Dealing Flop ** [ 4s, Qc, 6c ]
GiorgosK checks.
R_SVD checks.
Kingfish__ bets [$35].
GiorgosK calls [$35].
R_SVD calls [$35].
** Dealing Turn ** [ Ts ]
GiorgosK checks.
R_SVD checks.
Kingfish__ checks.
** Dealing River ** [ 2h ]
GiorgosK bets [$60].
R_SVD calls [$60].
Kingfish__ ???