It seems the majority of people here keep d. microlepis in freshwater. I'm starting a new 110g (4') tank and right now I have 3 Mono Sebae and 3 Scats (silver) in it and it seems like all the other fish I want to put in it are brackish fish as well (Archer, Needlefish, maybe a Dusky Panther Goby or two, Columbian shark cats...). The water I have in it now is hard, alkaline freshwater but I'm thinking about slowly making it brackish. The problem is that I really want a Datnoid and all the LFSs around here seem to have only D. Microlepis (no American Tigers or New Guineas). I know the ATs and NGs can do well in brackish but since I can't find any around here, the question is: Would a D. Microlepis be happy in a brackish tank or would he be unstable and miserable? This is my first post here, sorry its so long but I figured I would ask the Dat experts here at MFK before I buy one and have an unhappy fish. Thanks!!