i bought a toadfish today,which was advertised as a freshwater lionfish, it was an impulse buy, the fish was in a freshwater tank, i asked the saleslady to give me some info about the fish and she said she didnt know anything about it, as soon as i got home i started doing some research and learned that this is a fish that needs brackish water, i dont know anything about this type of tank, the fish did eat 3 rosys today so i assume it is in ok health, does this fish need a brackish tank or not?, can it remain healthy in a freshwater tank? please help me with any info u have on this fish