Well I bought the fish at Walmart. I did not realize they were brackish fish until I did research on them. So I had actually put them into fresh water to begin with. I also only added a small amount to make the water brackish. But the fish that died had a black belly when I got it, so I am sure...
I bought 2 green spotted puffers about 3 weeks ago. One was very sick ever since I got it from the store. It happened to die last night. My question is, will my other fish me okay to be alone? Or will I need to get another one. I do not want anything to happen to this fish and I am not sure if...