Mary Allen
Instead of lungs, fish have gills. They are the most important adaptation to aquatic life. The gills allow the fish to move about in the water without having to come up for air on the surface.
How is the fish adapted to life in the water?
Fish are excellently adapted to life in the water: the body is streamlined. This means that it offers little resistance to the surrounding water, so the water can flow easily along it. In addition to the skeletal bones, the fish has thin, almost threadlike bones.
How are animals adapted to life in the water?
The body is elongated, allowing for a meandering movement in the water. A powerful, muscular rudder tail has replaced the legs as a driving force. Arms and legs are greatly shortened.
How does a fish live?
All representatives of fish live in water. Fish habitats are inland waters with their freshwater (freshwater fish) and the seas with their salt water (marine fish). Fish have streamlined bodies. They have fins for locomotion.
How does a fish develop?
Fish reproduce by external fertilization. For this purpose, many eggs are fertilized outside the body. Fish larvae develop from the fertilized eggs, which are fed on the so-called yolk sac for the first few days. The brown trout lays about 1,500 eggs.
How are carp adapted to life in the water?
Instead of lungs, fish have gills. They are the most important adaptation to aquatic life. The gills allow the fish to move about in the water without having to come up for air on the surface.
What body covering do fish have?
Like amphibians, fish also have slippery skin. The body covering of the fish consists of fine scales so that the fish can glide better in the water. The fish are cold-blooded and simply adapt their body temperature to the temperature of the surrounding water.
What is special about a fish?
Fish have an elongated, laterally flattened body. Fish move with fins. The caudal fin is used for propulsion, the pectoral and ventral fins for steering, and the dorsal and anal fins for stabilizing the body. Some fish, for example, brown trout, also have an adipose fin.
Why can fish live underwater?
Fish also need oxygen to live. However, unlike us, they can breathe underwater. In order to do this, they do not extract the oxygen from the air like we do, but filter it from the water. How much oxygen is dissolved in the water depends primarily on the temperature of the water?
Does a fish have testicles?
In the abdomen are distributed from front to back: the heart, the liver, the gallbladder, the kidneys on top, the swim bladder below, and the intestine and the gonads, i.e. the ovaries or testicles. A special feature of the fish is the swim bladder.
Can a fish laugh?
Fish can laugh at photos & images | of animals, wildlife, and fish images at the photo community.
What is Pisces explanation for children?
Fish are animals that live only in water. They breathe with gills and usually have scaly skin. They are found all over the world, in rivers, lakes, and the sea. Fish are vertebrates because they have a spine, like mammals, birds, reptiles, and amphibians.
Do fish metamorphose?
Fish-like amphibian larvae that breathe through gills hatch from the fertilized eggs. They go through a metamorphosis in their development into lung-breathing adult amphibians.
What is fish good at?
Intuition and ear in one. The main sensory organ of the fish is the lateral line system: a highly sensitive long-distance sense of touch with which the animals can perceive vibrations, currents, and sounds in the water – and their place of origin.
What characteristics do all fish have in common?
What do all fish have in common?
aquatic. Every fish must live in water.
fins. Virtually all fish have fins.
shed. The scales of the fish are arranged like roof tiles, they serve to protect the skin from injuries.
gills.
swim bladder.
How do you describe a fish?
Fishes. Fish (Pisces, from the Latin Piscis = fish) are aquatic vertebrates with gill breathing. The class of fish does not describe a self-contained class, as is the case with mammals, birds, amphibians, or reptiles, but summarizes a group of morphologically similar animals.
How can a fish breathe underwater?
The fish do not take oxygen from the air like we humans do, but filter it from the water. Instead of lungs, the fish have gills located on either side behind the head. The gill covers are movable flaps of skin that the fish can open and close.