whole, high quality, clean and freshly frozen Mysis in easy to use blister pack. Mysis are a highly nutritious natural feed that most species of tropical and marine fish find irresistible. Part of a balanced diet along with flake or pellets. Instructions for use: push out the required amount of cubes into a recipient. Let them defrost, without water, at room temperature during minimum 10 to 15 minutes before feeding. Frozen foods may defrost in transit, please return to the freezer as soon as possible upon delivery. Ingredients Mysis.