do guppy fish have to have a filter in the tank
A saltwater fish tank can be half freshwater and all of the saltwater fish will live but not for very long.
Filter a fish? Do you mean filtering a fish's tank? Well you have to filter any fish's tank.
None, they need saltwater in order to survive.
Not for very long. They will die as they don't have the mechanism to filter salt out of the water (fish drink through their skin) that saltwater fish do.
all of them.
You can do as you please with your marine tank. Simply clean it and the filter out and then use new decore/gravel/plants etc. Fill with fresh water and when the filter is fully cycled add some fresh water fish.
A filter carbon for a fish tank is to help the fish breath and it clean left over from the fish. Hope it helps
No. Bettas are freshwater fish. Seahorses are saltwater.
Yes, you can find them where they sell salt water fish.
A clown fish needs at least a 10 gallon tank. In addition, a clown fish is a saltwater fish and needs anemone in the tank as well.