I fished in Portland/Corpus Christi Texas for Red Fish and Speckled Trout for 30 years +. Always had a ice chest full of ice. Placed fish on ice after catching stayed out all day came into docks cleaned fish
I use to keep Red Fish in refrigerator the steaks were in the frig for up to 4 days. Cooked each day a different recipe. Fish were excellent. Main thing is to put on ice keep cold