Ok, so I am new to the world of brackish fish and this forum. I am currently running a 37gal, and 45gal freshwater tank. I am looking to set up a 55gal brackish tank. I have found some key inhabitants that I particularly like, but the compatibility is where some information gets a bit fuzzy. I really like Bumblebee gobies, dragon gobies (I hear they can be kepy together, no prob.) But, I also like 'freshwater' lionfish. I didnt know if I could keep these with the bumblebees. Also, I hear the SG to generally keep with these fish is 1.012. Am I correct in saying this? Any help in this area would be greatly appreciated.