Materials scientists brought into prominence on Tuesday regarding an armoured fish living in the Amazon has developed gradually being a worthy of notice multi-layer defence against the exceedingly greedy piranha.

Additionally, microscopic examination as well as mechanical testing have disclosed that the secrets of the arapaima happens to be one of the biggest freshwater fish on the planet. Researchers led by Robert Ritchie at the University of California at Berkeley discovered its scales have an ultra-tough outer shell, designed to promote tooth fracture at the point of penetration. The scales also have a wrinkled shape, designed to bend pressure to a thicker, more elastic layer of collagen that lies underneath.

(AW:SB)