Here’s an interesting concept for assisting anglers to hold their catch while inflicting minimal damage to the fish (like slime loss). Jim Teeny is well known in fly fishing circles for producing excellent quality flies and selling accessories.
This original landing hand was designed by Kate Howe and in Jim’s opinion the best and most useful item designed with the fish in mind. It allows you to get an excellent grip on the fish and not remove the protective slime. Works on fish in both fresh and saltwater situations. Worth checking out, http://jimteeny.com/Landing-Hand-Fish-Safe-Handling-Bag_p_72.html .