New Born Baby fishes look beautiful

A fish in my tank gave birth to 20 baby fishes, they look so beautiful.
To breed fishes in house is very difficult. What i have done to breed them is i found a root of a tree which is having a lot of hiding space in it and i bought a new aquarium . i put that root in that and then i added fishes both male and female in it.
and kept it in side and i didn't installed filter in it just air pump and water heater to maintain the temperature. left it for few day and just opened the cap to give food twice a day. and after 1 month there were 20 more kids.