معلومات عن الاسماك بالانجليزي

معلومات عن الاسماك بالانجليزي

Fish are vertebrate animals that live in the water. Vertebrate means they have a spinal cord surrounded by bone or cartilage، Fish have gills that extract oxygen from the water around them، Relative to their body size, fish have small brains compared to most other animals، Fish are covered in scales which are often covered in a layer of slime to help their movement through water، Although jellyfish and crayfish have the word ‘fish’ in their name, they aren’t actually fish.