Hey guys, I am not having any luck with my flame red dwarf gouramis. I have had 3 die within the past 3 weeks. Levels in the aquarium are fine, the co-habitants are 2 bumblebee Platys, 2 black Mollies, 1 awesome Betta, 3 Cories, 10 ghost shrimp, 1 dragonfish, 2 Glofish and 6 Neon Tetras. The aquarium is 30 gallons, fully cycled, plenty of amazon swords and java moss. I'm confused because the other fish are fine but these gouramis are not making it. Any suggestions?