They do not need to *adapt*. This is their natural habitat.
2 ways that Fish are adapted to living in water are gills and fins, or scales ( streamline) and protected eyes.
No, it will kill it.
Gills
yes.
tdyt
A water dweller is a living organism that resides in an aquatic environment such as oceans, rivers, lakes, or ponds. These include fish, marine mammals, amphibians, and various invertebrates that have adapted to living in water.
Fish.
Fu
Leaving a dead fish in a tank with living fish can lead to several issues. The decaying body can release harmful toxins and ammonia into the water, which can negatively affect the water quality and harm the remaining fish. Additionally, it may attract scavengers and bacteria that can further compromise the tank's environment. It's important to remove the dead fish promptly to maintain a healthy ecosystem for the living fish.
All living things need water.
amphibian
Fish in tanks eat fish food while there is a variety sold in stores reef frenzy is the best for salt water. In the wild fish each smaller fist, plants, and organisms living in the water.