Depends what kind of fish. If it's a Freshwater Fish, tap water from a faucet that has a water filter in it is good. If it's a Saltwater Fish, buy sea salt and mix in the right proportions to filtered tap water.
Mild fresh water with vegetation.
fresh water creeks and streams
The best place to find a salt water fish tank is in the Marine Depot. Not only can you find salt water fish tanks, you can also find aquarium supplies and LED lights.
if its a pond you have its coi they can live for years ans are a hardy fish
with a fork and knife
To maintain a healthy environment for fish in a fish bowl with water, it is important to regularly clean the bowl and change the water, provide proper filtration and aeration, monitor water temperature and quality, and feed the fish appropriately. Additionally, avoid overfeeding and overcrowding the fish bowl to ensure a healthy environment for the fish.
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.
otto cats are your best pick as long as your other fish are not aggresive
When you buy fish from a retailer - their water quality might be slightly different from yours. When you get the fish home, it's always best to gradually mix in some water from your own supply with that of the water in the bag the fish is sold in. Leaving it for a few minutes will acclimatise the fish to its new surroundings.
Spring or fall when the water temperature is lower. This makes it easier to acclimate the fish.
It is not recommended to keep a dead pregnant fish in the tank as it can decompose and release toxins into the water, putting the other fish at risk. It's best to remove the fish promptly and perform a water change to maintain the water quality.
The best way to change fish tank water for the health of the fish is to perform regular partial water changes, typically replacing about 10-20 of the water every 1-2 weeks. Use a siphon to remove debris from the gravel and treat new water with a water conditioner to remove chlorine and chloramines. Monitoring water parameters like temperature, pH, ammonia, and nitrite levels is also important to maintain a healthy environment for the fish.