Fish process the oxygen in the water through their gills. They suck in water and as they push the water out of their gills, the gills retain the air. This is why fish tank require pumps; to circulate the water and create oxygen.
to breathe
Because fish have gills,giving them the ability to breath under water and divers dont.
Saltwater fish require salt water, and fresh water fish need fresh water, you can't mix them, or the fish will die. You need to look at each individual fishes needs as to what temp they need their water to be. There are some saltwater fish that can survive in fresh water, but it is not healthy for them.
Depends on the fish.
Yes, it is possible to drown a fish. What you need: An airtight box A fish Yourself Go to a lake, ocean, or place with very deep water. Before you jump in, place the fish in an airtight container with NO WATER. Jump in the water with the airtight container and drown. You will drown with the fish, but yea, who cares.
You need a water filter or clean water. Something is wrong with your water.
go to the map, click buy a room, if you have a fish pet (manatie,dolphin,whale,fish you get the point)you can buy an under water room. you NEED a fish pet for an under water room. im not a good speller
Fish breathe underwater by extracting oxygen from the water through their gills. As water passes over the gills, oxygen is absorbed into the fish's bloodstream, while carbon dioxide is released back into the water. This process allows fish to extract the oxygen they need to survive in their aquatic environment.
Because fish have gills and can breathe under water and humans do not
Fresh Water
forever, they live under water. They don't need air, they have gills. Sharks are fish and do not need to hold their breath in water, they have gills.
Tap water. But to keep fish healthy you will need to add a chemical called Water conditioner or Water ager. This simply removes any chlorine or chloride from the water as fish cant live in chlorinated water.