Adventure Aquarium - Arapaima have very hard scales, like heavy armor, which allow them to be mobile and protected from predators. #AAQFeaturedCreature #ianAnimal

Piranha-Proof Fish Scales Offer Inspiration for Better Armor

Protective role of Arapaima gigas fish scales: Structure and mechanical behavior - ScienceDirect

Piranha-Proof Fish Gives Inspiration for Body Armor

26 Most Aggressive Freshwater Aquarium Fish (With Pictures)

Piranha-Proof Fish Scales Offer Inspiration for Better Armor

fish scales, body armor

This Giant Fish Has Adaptable Piranha-Proof Armour

Arapaima Fish Scale: One of the Toughest Flexible Biological Materials - ScienceDirect

Arapaima Fish Scales are One of Nature's Toughest Flexible Materials