Not successfully. Moving water will likely knock the eggs out of the nest. The water should be near still with only an airstone present.
yes
The developing fish inside the eggs eat the eggs.
deffo salt watercoz i have a tank full of siamese fighting fish and i keep them in saltwater
Usually around 200 or so.
a few minutes
that's silly
A Siamese fighting fish/betta? Yes! They cannot survive in salt water.
yes fish lay there eggs in the water
i think like 300 but sometimes even 500 eggs at a time!
I think the fish you are asking about is the Siamese Fighting fish AKA (Betta splendens). They are tropical fresh water fish.
True.
Take them out of the tank and separate them. They'll most likely eat the babies.