Cuz they DO!
tough scales
Yes, because tunas have scales and fins which are required in order for a fish to be considered kosher.
tunas fish habitat is the saltwater
No. Tunas are fish, a different group.
Catfish. Sharks don't have scales either. Both have a tough, rubbery mucous membrane that insulates their tissues.
They are a type of fish that live in the ocean.
Ganoid scales provide protection to the fish by forming a tough outer layer. They also reduce water resistance, allowing for faster and more efficient swimming. Additionally, ganoid scales can have a reflective or iridescent quality that helps with camouflage and communication.
No, scales are not composed of chitin. Scales are made up of a variety of different materials depending on the animal, such as keratin in the scales of reptiles or enamel in the scales of fish. Chitin is a tough, semi-transparent substance that makes up the exoskeleton of arthropods like insects and crustaceans.
Yes they can. All fish (and all animals, franky) can "talk" in their own language.
No you can not it fish scales.
They have a tough layer of scales and just slip in because they are like peas in a pod. They occasionally get stung though.
Fish scales do not tessellate, they overlap. Like most scales do.