A fish breaths through it's gills.
They have two little holes above their beak, and that is their nose. They breathe through that usually, unless they have been out in the heat...then sometimes they pant, like a dog, a bit.
Yes, fish release carbon dioxide (CO2) into the water through their gills as part of the respiration process. This CO2 dissolves in the water and can contribute to changes in the pH levels of the aquatic environment.
Yes, some fish are known to blow bubbles as a way of communicating, playing, or as part of their breeding behavior. For example, Betta fish are known to make bubble nests in the wild by blowing bubbles on the water's surface to construct a nest for their eggs.
It filters the water out. Basically the 'breath in' water and take the oxygen from it and the water filters out through the gills
Some spiders and insects that live in part underwater carry air bubbles with them to breathe through.
You breathe in through your nostrils or mouth, which allows air to enter your respiratory system and reach your lungs where oxygen is absorbed into the bloodstream.
You breathe through your trachea, not your esophagus. The trachea is the tube that carries air to and from your lungs, while the esophagus is the tube that carries food to your stomach.
The mouth.
They breath air through a hole on the top of their head called a blowhole.
Fish gills are the equivalent of human lungs. Our lungs, and the fish's gills, are the part of the body that absorb the oxygen we need and expel the carbon dioxide that we nave to get rid of. The way that this happens is through the blood vessels (arteries carry oxygen-rich blood around the body, while veins carry deoxygenated blood) Humans extract oxygen from the air that they breathe into their lungs, while fish obtain their oxygen from the water that passes through their gills.
The genitals
Their lungs and diaphragm
They have two little holes above their beak, and that is their nose. They breathe through that usually, unless they have been out in the heat...then sometimes they pant, like a dog, a bit.
The DNA is homogenous through-out the entire body of the fish (or all creatures for that matter). What you should be asking is 'which part of the fish's genome do you mix with your own DNA to become a mermaid?'
No. Fish are not part human. Fish and humans are both made of cells and DNA, but they are also very, very different. For instance, fish can breathe underwater and humans can't. Humans can live outside of the water, and fish can't.
Ants breathe through their spiracles. These line the side of the thorax, which is the end most/distal body part.
A fish's mouth is typically located on the front part of its body. This positioning allows the fish to easily catch prey and feed on the organisms in its environment.