AK bvb against fish

Villain is 38/6. I should've made it $2 preflop but other than that how was the hand played

Is river a check/fold? I really wanted to slow down on the turn but couldn't really see how a 3 is in his range

PokerStars No-Limit Hold'em, $0.50 BB (9 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

saw flop

UTG+1 ($63.35)
MP1 ($11.45)
MP2 ($50.05)
MP3 ($74.45)
CO ($78.05)
Button ($8.50)
Hero (SB) ($50.25)
BB ($37.70)
UTG ($6.10)

Preflop: Hero is SB with K, A
7 folds, Hero bets $1.50, BB calls $1

Flop: ($3) 2, 4, A (2 players)
Hero bets $2, BB calls $2

Turn: ($7) 5 (2 players)
Hero bets $4.50, BB calls $4.50

River: ($16) J (2 players)
Hero checks, BB bets $8, Hero calls $8

Total pot: $32 | Rake: $1.55

he could easily have a 3
I mean there are hands like A3s, 23s, 34s and they're so pretty all the fish play them

if you wanted to slow it down on the turn you could probably c/f turn and it would be fine unless he's aggro
in which case you could make a case for c/c turn and c/f river

Bet turn and river for value, $4.50 is fine on turn now bet $8 or so on river.

read the famed bet-fold post.
Now bet-fold this river.