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.
why not
The choice is entirely yours. Either fish would be OK in a small 10 gallon tank provided it is heated and filtered properly.
No they cannot, also if you put two Betta fish together, they will fight.
Your 50 gallon tank will probably have some form of substrate (gravel) displacing some water, and it most certainly will not be filled to the absolute brim so assume the tank is actually holding about 42 gallons of water. Then do the calculations as you follow the basic rules.. The basic rules are. 1 inch of fish needs at least 1 gallon of water (a Red Tailed Black shark is about a 6 inch fish) Every tank must have a permanently running cycled filter. Every tank needs at least 50% of its water replaced every week.
If you have a red tailed black shark that is in a small aquarium but you now need a bigger one, you can buy a cheap one through Amazon's UK website. You will be able to find a 50-gallon tank for him to go in.
No shark can live in a 3 gallon tank. It would be a nice home for a Betta though!
yes they can but they have to be in a ten gallon tank or 17 gallon you can fit one inch of a fish per gallon
length and width for a 55 gallon fish tank
Yes , they can if you have a big tank.
I wouldn't recommend it - since the RES will view the fish as food !
you can put a betta in a 5 gallon tank
normal rule for fish in a tank is: For every 1 inch of fish there is 1 gallon of water