Snake and glide - This usually describes how a snake moves. It slithers (snakes) by bending its body side to side and glides smoothly over the ground.Fish and what - Fish swim by moving their bodies and tails side to side, propelling themselves through water.If you meant a phrase like "snake and glide, fish and ___," it might be about comparing movements of animals—snake moves by slithering/gliding, fish move by swimming.