No, gouramis won’t eat neon tetras. Gouramis are mostly peaceful and unlikely to eat neon tetras that are too big to fit in their mouths. Moreover, neon tetras are fast swimmers. The slow-moving gouramis won’t be able to catch the tetras even if they wanted to.
With that said, in some rare cases, your gouramis might attack or bite the neon tetras. To prevent that from happening, make sure to:
- Avoid overcrowding the tank
- Feed them enough food
- Provide them with lots of decorations, plants, and hiding spots
- Separate the gouramis from fry and young tetras
- Monitor the tank dynamics regularly
