The number of fish that can be kept in a 200 liter tank depends on the size and species of the fish. As a general guideline, you could keep about 15-20 small fish or 5-10 medium-sized fish in a 200 liter tank. It's important to consider factors like water quality, filtration, and the specific needs of the fish when determining stocking levels.
it depens on the fish... lol
25
depends on the size of the fish, and the length/width of your tank.. the maximum inches of total fish you can get for a 29 (110 liter) tank is usually 20 inches fish. absolute maximum is 29 inches. hope this helps.
400 (UK) or 480 (US)
71 liters is almost 19 gallons and the rule with tropical fish is one inch of fish per a gallon of water at there adult size so it would be different for every fish you got like if the fish adult size is 2 inches that you could have about 10 of that fish in your tank.
2 baby comet goldfishes or 3
No, it is not safe to keep lucky bamboo in a fish tank as it can release toxins that are harmful to fish.
2 or 3
yes
No, it is generally not safe to keep a betta fish with other fish in the same tank as bettas are known to be aggressive and may attack or harm other fish. It is best to keep bettas in a tank by themselves.
Goldfish and such, about 4-6 Tropical Small like cardinals then about 8