it depends on the fish.
That would be oxygen
No.
yes
it has to take steroids
They absorb carbon dioxide from the water - and release oxygen. This keeps the water's oxygen level safe for the fish to survive.
There are many species of "Tropical Coral Reef Fish" that are commonly called "Butterfly Fish"
Please tell me!!!!!!!!!!!!!!!!!!!!!!! fish will be crowded and oxygen consumption would be to excessive for fish to survive fish will be crowded and oxygen consumption would be to excessive for fish to survive
No, a fish cannot survive in milk because milk does not provide the necessary oxygen and nutrients for a fish to live.
It is better for the fish to be put in water that it was found in.
oxygen
It depends on what type of tropical fish you are intending to keep; it ranges from 6 (freshwater & discus) to 8.5 (for cichlids).
A few hours at most.