What fresh water fish can be in a one gallon tank?

Answer 1

You should never keep guppies in a 1 gallon tank. It is 1 gallon for everyone 1 inch of fish. So you might be able to fit one guppy in there, so they will be happier with more guppies in a larger tank. So do not try to put more fish in a 1 gallon tank with guppies. It is a bad idea and will cause over populating, fighting and forcing you to clean the tank much more often. In small quarters sickness can also occur. I suggest you buy a bigger tank, then think about getting more fish.

Answer 2

A male beta fish (sometimes called fighting fish) does quite well. I have had one for nearly a year in a 1 gallon glass bowl. I have a plant with the roots hanging down but I also feed it beta food. I clean the bowl about once a month, always use the cholrine remover when you change the water.

As an addition to the above answer, I'd like to say that changing the water once a month in a 1 gallon bowl can be disastrous to your betta's health. The ammonia and nitrite levels can get quite high after that long of a time and can kill your fish. Also, Bettas can live in a 1 gallon tank but they'll require a heater if you really want them to thrive, as they are tropical fish. They don't really make heaters suitable for 1 gallon tanks, altho in a pinch I put my 25 watt heater in vertically and that seemed to work for a time. My betta is quite happy in his 3 gallon tank, although if you choose to go with the one gallon, I would recommend changing his water no less than once a week (Never change all the water in the tank, though 3/4 of the water will do. Changing all the water could put your fish in shock from the extreme change), making sure you age the water for a few days before use (put it in a 1 gallon water clean water jug for a few days with no cap), add dechlorinator, and a little bit of aquarium salt. Bettas also love plants with soft, broad leaves that they can rest on. Silk plants are an optimal choice.

Keeping fish in a one gallon tank is actually more difficult than using a larger tank because of temperature issues (if you change the temperature too rapidly, you can shock and even kill your fish), filtration and water cleanliness problems. A larger tank will actually be easier for you to maintain in the long run and I encourge you to only use your 1 gallon tank as an emergency quaratine space for your larger, healthier tank.

If you have a betta, an under gravel filter works nicely in a gallon size tank. The current is not an issue, and the filteration keeps your betta'd digs clean. Remember to do particle water changes, and testing strips for nitrate and nitrite, and ammonia levels!

Bettas are relatively hardy fish and can live in a one gallon without a heater or filtration, although it's not the ideal size. I would recommend getting a five gallon. They are still small but large enough to house one of several options:

- 1 male betta

- up to 3 female bettas

- 1 goldfish (although it would have to be housed in a different, larger tank as the fish grows)

- a pair of killifish, but these should only be attempted by advanced aquarists.

- 1 group of any schooling tetra that is limited by 2-3 inches each

Getting a five gallon allows you to acquire a heater and filter easily for this size. Except for the bettas and goldfish, the third and fourth option require at least a heater, but in all cases, a 20% or more water change is recommended once a week (and in the case of the single goldfish, twice a week).

Answer 3

i have a 1.5 gallon tank with a beta and some neon tetras in it. you can get a beta as long as you don't put 2 male betas in the same tank no matter if there is a female or Not. This is why they are called Siamese fighting fish.

Answer 4

With filtration and heating, most very small tropicals will live in a 2 gallon (small tetras, small rainbows, small rasboras). A betta would also work well in a 2 gallon tank.

Answer 5

the only fish that can go in a 1 gallon tank is a single male betta.

many people put gold fish, but goldfish actually need a minimum of 20 gallons

Answer 6

The Betta fish or 'Siamese Fighting Fish' is best suited for life in a bowl.

Answer 7

None. A 1 gallon is far too tiny to keep fish in! I would not recommend keeping any fish in tanks under 5 US gallons, and a 5 gallon can pretty much only house a single Betta!

Answer 8

Any fresh water fish can be, as long as sun can get to them, and there is salt in the water. But i wouldn't recommend doing that it's cruel and illegal.

Answer 9

a male/female betta fish