it is inactive and cold blooded
no
A certain amount of oxygen dissolves in water (thus enabling fish to breathe).
The amount of oxygen is getting low so that the many living things in the water cannot get a normal amount of oxygen that can cause a fish kill.
Dissolved oxygen refers to the amount of oxygen present in water. It is essential for aquatic life to breathe and thrive. Factors such as temperature, water flow, and levels of organic matter can impact the amount of dissolved oxygen in water.
Dissolved oxygen is the current amount of oxygen in the water. A certain amount of Dissolved Oxygen Is needed to keep the fish alive, if any of the dissolved oxygen decreases by either a little or a lot it can cause changes in the water, normally if the dissolved oxygen decreases so do the fish and aquatics life's life.
Water has oxygen dissolved in it. It gets this oxygen from plants, agitation, air stones, air to surface transfer, etc.. Fish require oxygen to live. If there was actually no oxygen in the water, the fish would suffocate in minutes. Otherwise it would depend on the amount of water, the number of fish, and many other factors.
It all depends on the amount of oxygen in the water. If the water is low on oxygen then a fish must work harder to get the oxygen it needs so it will flap it's gill more often.
The fish gets its oxygen from the water, from the limited amount dissolved there. Unless more oxygen is added to the water, the fish will "drown" (asphyxiate). In goldfish bowls, it is important to trickle in some water regularly to encourage oxygen intake while also balancing evaporation. In larger aquariums, or with more fish, an aerator bubbles air through the water to add oxygen.
Countercurrent exchange in the fish gill helps to maximize the diffusion of oxygen from the water into the blood and the removal of carbon dioxide from the blood into the water. This efficient exchange occurs due to the flow of water and blood in opposite directions, creating a concentration gradient that allows for more effective gas exchange.
the gas that released by fish is a carbon that the fish can live at the water without a air. and the fish can not live if without small amount of air. and process by breathing with amount of air that all the animals and humans can breath.
8/9 by weight, of water, is oxygen, as part of the water molecules itself. Apart from that, there may be a variable amount of oxygen gas dissolved in the water. This dissolved oxygen is the only oxygen that can be breathed by certain living creatures, such as fish.
Tadpoles get oxygen from water like fish do.