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The lubricating proteins were abundant in the fish’s jaws and in the fins of zebra fish, gar, and sticklebacks, the scientists reported.

Prehistoric-looking fish called gars, which have the slowest rate of molecular evolution of all jawed vertebrates, are the most striking examples.

We grab our soap and wade out into the river’s side channel for a wash-up and dip before breakfast, hoping a gar doesn’t rub up against our legs with its jagged teeth and prehistoric scales.

The alligator gar caught in eastern China last week weighed roughly 11 pounds.

He also said voters had responded positively to his party's plans to cut VAT using the proceeds from a windfall tax on the profits of oil and gar companies.