make a drawing. By, uhh... fishing ad to move nothing more A fish is a cold-blooded vertebrate that lives in the water and breathes through gills, which allow it to extract oxygen directly from the surrounding liquid. Unlike mammals or birds, fish are ectothermic, meaning their internal body temperature fluctuates based on the temperature of the water around them. Most fish are characterized by a streamlined body covered in scales and equipped with fins, which they use to navigate and stabilize themselves in aquatic environments. From a biological perspective, "fish" is a diverse label that covers everything from tiny minnows to massive whale sharks, encompassing species with skeletons made of bone as well as those with skeletons made of flexible cartilage, like sharks and rays