Sadly, my beautiful Scout was dead in the tank this morning. I'd only had him since Saturday and I have no idea why he died. I checked the tank parameters on Saturday night and Sunday night (ammonia and nitrites at zero, nitrates between 5 and 10ppm). The tank has been reading 78*. He was flaring and active Saturday, but on Sunday he spent a lot of time on the bottom of his tank although he did come up occasionally and swim some. He ate a bit at 10am, but nothing at 7pm. Aside from being inactive, he showed no signs of problems and when I looked at his limp little fish body after pulling it out of the tank, there is no fungus or any discolouration on him. I'm quite sad.
So we will get another fish, but I'm wondering if I need to do anything to the tank before putting another in there?