I prefer folding preflop,a
k
4
5
is worst similar type hand i would call here.On the flop you have marginal hand that is likely to
remain marginal on river, it would be really tough bluffcatching with this 3 streets so prefer fold.If this player has anything weaker than A
xxx it
would be very bad play by him.Turn min check/raise is super weird, at this point it looks like nut spades with side cards at least if not top 2 but you have
to call obviosly.River is tough, the problem with fish players is they often bet here medium strength hand like top 2 or even set, being afraid of getting
bluffed or whatever reason is.You basically can beat only akqx type hand on river,i would advice folding here.