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Just brought them home! The store had them in freshwater and my brackish water is 1.008 sg, so I am acclimating them by the drip method right now....will get pictures soon!!
BBGs are great little fish.
I actually keep a pair in freshwater, not brackish. I've been reading up on goby conditions, and its a misnomer that they live their adult lives in brackish. It's actually the reverse. They spawn in freshwater, the fry are carried downstream into brackish climes, where they grow up as juveniles. Then, as the enter the adult phase, they return to freshwater where they fully grow and live out their lives as adults (spawning there also). It's known as amphidromy, and the gobiidae family (among others) practice this.