The tank you have described is extremely small and should not be used to house any fish. 1 gallon is not enough space for a fish to swim around, and it will most likely have a very short life if kept in this tank
A 1 gallon tank could have one betta fish, but you will need to be diligent about changing the water on a regular basis. The smallest tank that should be used, even for a betta, is a 2.5 gallon tank as it at least gives the fish swimming room.
A betta fish would be much more suited to a 1 gallon tank than a 'variety'. You shouldn't keep much more than one fish per gallon anyway.
No, red tailed sharks get too large to survive in a 1 gallon fish tank. Only very smally fish such as endlers or guppies, or a betta, would be ok in a 1 gallon aquarium.
It is generally recommended to have 1 inch of fish per gallon of water. So in a 186-gallon tank, you could have approximately 186 inches of fish. However, it's important to consider the specific needs and behaviors of the fish species you choose to ensure they have enough space to thrive.
Working on a basic rule of fish keeping which is "1 inch of fish needs 1 gallon of water" you have room for only 1 zebra in such a tiny tank.
Go fish
4 or more or less. Depends on the size of the fish. Usually 1 fish per 1/2 gallon.
Only 1. Usually a Betta is all that is kept in a 3 gallon tank
one
Yes.
betta fish like at least a 1 gallon tank (nothing smaller) > They can live in a community tank but with no other bettas.
ZERO!! A 1 gallon tank is not large enough to keep any kind of fish in. A Bubble eye goldfish can grow to 10 inches long and so, using the basic rule for keeping fish. "1 inch of fish need a minimum of 1 gallon of water" you would need at least a 12 gallon tank to house 1 Bubble eyed goldfish.