There seems to be lots of confusion as of late as to what is a brackish fish and what is not. In my book (along with many others ) brackish fish are: Anablep anablep (4-eyed fish), Mudskippers, Archers, Monos (sebae and argents), Scats (all 4 species-silver, ruby, green, and African), Puffers (Green Spot and Fig 8-are a few less common species that are too-Dwarfs and Bumblebees/South Americans ARE NOT!), Gobies (Knight, Bumblebee, White Cheek, Dragon/Violet, among others), "Freshwater" Snowflake Moray, Black fin Catfish, the list goes on. Feel free to add ones I have forgotten. Fish that do well in brackish are the Mollies and Guppies, along with few others. Most common freshwater fish (Plecos, cories, tetras, oddballs, gourami's, etc) are not brackish and few do well in such. I don't mind all Puffer talk being here as this is where the "puffer groupies" hang out . But other than that this forum is for only brackish fish. Posts regarding other fish that are not brackish will be moved or removed! Thanks!