Betsizing w/AK on KQQxx vs fish

Stacks:
UTG ($14.99)
UTG+1 ($31.24) (53/4/huge station)
CO ($18.80)
BTN ($5.15)
LAPRAS ($22.24) (Perceived image irrelevant)
BB ($28.07) (37/14/station)

Pre-Flop: ($0.30, 6 players) LAPRAS is SB
1 fold, UTG+1 calls $0.20, 2 folds, LAPRAS raises to $0.80, BB calls $0.60, UTG+1 calls $0.60

Flop: ($2.40, 3 players)
LAPRAS bets $1.85, BB folds, UTG+1 calls $1.85

Turn: ($6.10, 2 players)
LAPRAS bets $4, UTG+1 calls $4

River: ($14.10, 2 players)
LAPRAS bets $5.25


How's my sizing?
I have my own thoughts but curious to see what you say first...