How long do neon fish stay pregnant?

Answer 1

Neon Tetras are egg layers/scatterers and do not have babies. They can spawn every two weeks when conditions are right and they are also in breeding condition. They lay hundreds of adhesive eggs when they spawn.

Answer 2

if by "neon fish" you mean neon tetra, they dont get pregnant they lay eggs.

Answer 3

Neons lay eggs, they do not give birth.

Answer 4

When they mate!