I took a trip to the lps yesterday, just narrowly avoiding buying a betta and an endler. But then my friend saw the flounders in the guppy tank. She offered to buy me two (as she killed the upsidedown catfish I bought for her). I asked the fish guy how to care for them. He said they could go in with my guppies in my 10 gal. I just read they are brackish. I've seen these flounders in the guppy tank at the store for a couple of weeks. Could I be super lucky and have gotten some of the actual freshwaters? Or am I just killing them slowly??? I need advice!