Young fish are called fry.
The name of a young fish is a 'fry'
No. Fish have no delivery system for nourishing their young.
Fish do not care for their young. Some even eat them.
Fish do not take care of their young. Young fish hatch and swim away. Some become food for larger fish ( feeder fish) and others escape to grow up.
Some fish dont care for there young and just leave them there, though other fish care for there young until there old enough.
no, a fish is not a mammal.
they care for their young.
fry
The general term for a young fish is a fingerling.
A viviparous fish
No, there are other fish who have live young called guppies or something like that