There are several products designed for this purpose. Mosquito Dunks are super easy to use.
depends on the species you want to keep... 20 - 50 fishes are good in tank of this capacity
Not unless you want to breed them, if the are the same gender that's fine to keep them in the same tank or in different ones
Assuming we are talking about a common rectangular aquarium. (Length of tank in inches) x (Width of tank in inches) x (Depth of tank in inches) = Volume of the tank in cubic inches Volume/231 = Gallons in tank Please keep in mind that rocks, plants, fish, and decorations reduce the volume of the tank somewhat.
By feeding it with the right food and by not keeping it in a small tank.
This will depend on what you stock your tank with. You do not have to use any substrate at all if you choose not to unless you are going to have live plants, or if you keep rays that should have some sand to move around
only to breed
Most livebearers breeding tanks are designed to keep the adult in and let the youngsters out. The idea is to stop the adult (mother) from eating her young.
Goldfish are canibals when it comes to their young and eggs. So if you want to keep ALL the fry, you can either: A: keep them in the main tank in a breeding box B: remove them entirely and put them in a separate tank solely for reading fry
You can do one of three things. 1. Leave the pregnant fish alone in the main tank and just let the pregnancy happen. They baby fish will probably find hiding places themselves. 2. Get a breeding tank. Leave the pregnant fish in the main tank and then when you see a fry, net it, and put it in the breeding tank. 3. Get a breeding tank and put the pregnant fish in it and just leave it. Whenever the pregnancy is over, put the pregnant fish in the main tank but leave the fry in breeding tank.
after breeding the male betta might attack the female and the fry is in danger
getting more goldfish in your tank
A Sea Horse.
No. Other fish in a breeding tank only create problems.
The less messing around you do in a breeding tank the better. If absolutely necessary you could syphon a little water from the base of the tank to remove uneaten food or poo.
Drinking water tank NONE unless you want your horse to get diarhea, sick and dehydrated
Simple answer is no.
It's best to only put male and female betta fish in the same tank/bowl if you are breeding them. If they are not breeding and they still stay in the same area, the male would most likely attack the female, so keep the female away! Also, if you are breeding betta fish, make sure to remove the female betta after she lays her eggs, as the male will care for them and chase the female away.