Mossy frogs+Fish=?

[Raya]

tannin rich water is what is commonly known as blackwater. they are countless species of fish that not only survive in blackwater, but THRIVE in it.

Have no experience with Mossy frogs and hope one day I'm able to keep them. However; I do know a lot about fish, including some that love low pH tannin rich water.

I stand corrected.

Another issue that I can see is that mossies don't want the water too deep. This may or may not be an issue for the fish, I have very little knowledge about keeping fish.
The fish may also get poisoned from sharing the water with mossies. Not that they are the most poisenous species out there but still...