DO TETTRAS AND SILVER MOLLY GIVE LIVE BIRTH AND IF SO HOW LONG ARE THEY PREG.?
Mollies are livebeaers and are pregnant for about 4 weeks. I do not know anything about Tetras sorry.
Tetras are egg layers. The ones that will spawn in aquariums are usually egg scatterers. Spawning tetras should have a separate aquarium with near ideal water parameters. Usually, they are removed to their regular aquarium right after spawning. This reduces egg eating.
Mollies are live bears but tetras are not. Tetras are egg layers they are preg for about 14 days then they lay there eggs