I (almost) always put fish on ice at the end of the day and clean the next day. IMO they are much easier to filet and there is less blood in the meat. I still soak in salt water in fridge for at least another day before freezing in freezer bags with water and NO air bubbles in the bags. Not too hard to squeeze out air, but submerging in a pot of water totally accomplishes the feat.
I always clean crappie the next day after being on ice all night. They are much firmer and cleaner to filet, it seems like you get more meat off the fillets when they are cold and firm.
Then bag when up in quart freezer bags with no air bubbles.