<ul><li>Mucus layer in fish plays a crucial role in protecting from pathogens, reducing drag, and even providing defense against predators.</li><li>Researchers conducted experiments on the mucus layer of the northern snakehead fish, which can move both on land and in water.</li><li>The study found that the snakehead fish had a slipperier mucus layer compared to other non-terrestrial species.</li><li>The slipperier mucus layer of the snakehead fish may help it move more easily on land and cover greater distances.</li></ul>

Measuring Mucus by Dragging Dead Fish

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