Brackish gobies?

Unsure about the tank size and GSP, but I'm pretty sure they eat BBGs.
 
Yep, I meant the knight gobies will eat the bumblebees. Flounders could probably eat BBGs as well if they get big enough.
 
I think they get to like 6" or something, probably varies depending on species. They're peaceful, but being a bottom-dwelling carnivore, there's a possibility that it could go after the BBGs.
 
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