Definitions for "Slimy"
Of or pertaining to slime; resembling slime; of the nature of slime; viscous; glutinous; also, covered or daubed with slime; yielding, or abounding in, slime.
covered with or resembling slime; "a slimy substance covered the rocks"
Fish have a protective mucous in addition to or instead of scales (especially lampreys and bony fishes). This slimy coating is full of colloidal proteins that can be used (like gelatine) as a base for jellies.