fin and tail
Sharks lack a swim bladder, which enables a fish to float. Sharks must swim constantly or they will die.
they can adapt to any type of temperature in any types of water
Everything that a fish is enables it to survive in its own specific environment. There are not simply one or two features. The fish is a whole product of its evolution and is designed in every part to survive in water.
Gills are the adaptation that enables a fish to extract oxygen from water and release carbon dioxide. This allows fish to respire efficiently while living underwater.
The main features of a fish include gills for breathing underwater, fins for swimming, scales covering their bodies, and a streamlined body shape for efficient movement in water. Fish also have a lateral line system that helps them detect movement and vibrations in the water.
Fish adapt to their environment by having a streamline body to cut through the water and they have gills to help them breathe under water. Some fish are even camouflage to disguise them underwater.
There are several features of fish; specifically, they have gills, scales, fins, are water-dwelling, and they are cold-blooded
their fins and other physical features are thinned, unlike humans. Humans, in comparison to fish, have much bulkier limbs than fish. Water is able to move/glide past the fish body parts easier.
The scales on the fish body helps it to reduce water loss.
Gills are an organ that fish have, that enables them to obtain oxygen from the water that they are in; it is what fish use instead of lungs.
It acts like a keel on a yacht and enables the fish to propel itself in any direction against a water flow.
they have gills to breathe, a streamline body for cutting through the water Answer 2 Many of them also have a swim bladder which is a bladder filled with a gas, which enables them to neither sink nor float