When they came in, the supplier specified that they are brackish water fish, capable of living in saltwater also. But our supervisor decided to put them in the African cichlid system with monos and orange chromides.
I saw they were eating frozen bloodworms pretty eagerly (as you can see, they are pretty emiciated), so I bagged them home. From the looks of it, they're doing pretty good.
My tank currently holds slight amount of salt due to some minor injuries on my goslinia catfish, so hopefully that'll provide enought salinity for the target fish and I will slowly decrease the salt level and see how they do.