One thing about compatibility is that it's been documented that a certain species is not compatible with another. But there is a exception to this rule because fish are just like people one person's behavior differs from one person to another.
So, saying that the puffers and triggers are not compatible. The lion is cool with either fish. Buying them very small will give you a better chance in making this happen if you introduce them together. If it means anything I wouldn't chance it.