Depending on the size of the tank, and tank mates, especially if both motaguense see the other tank mates as competition. And if they are compatible, and both are ready to spawn, could be, but if they are not, one could be dead within a day or 2.
If the they see the others as competition, and they want to spawn, all other tank mates could be dead in a day or 2.
When mine wanted to spawn, all others in the tank were doomed.