Owen Caissie is an avid fisherman with Marlins

MIAMI — Last month while rehabbing in Jupiter, Fla., Marlins rookie outfielder Owen Caissie found himself waking up around 4 a.m. on a daily basis.

No, the organization didn’t force him to train at ungodly hours. Caissie would walk along the beach trying to catch snook.

Over the last few years, Caissie has developed into an avid fisherman, so he knows that the common snook — abundant…