I guess it isn't really an emergency anymore, but I don't know where else to put the topic. My beloved Massimo Sementilli (a little inside, I know), a beautiful red betta fish, passed this past week suddenly, and I can't figure out why. It's been weighing on my mind, so I figure I'll throw it out there.
My wife and I had him for about six months, and in that time he received quite good care. We kept in an individual bowl, without a heater or filter, so because of that we had to change the water often - at least three times a week, to keep it warm. I'd normally fill it with tap water that had been set out, and top it off with warm water to about 80 degrees F, and drop in some extra de-chlorinator and stress coat. He had been an extraordinarily happy fish in this time.
We changed his bowl like normal last week - nothing out of the ordinary at all. When we put him back in his bowl, he for some reason kinda' freaked out, and started trying to "dig out" with his head through the stones at the bottom. I went to feed the rabbits, and when I came back, he was dead with his head in the rocks, and his gills had turned a kind of black. His mouth was wide open, and he still looked like he had been trying to get out. I know that I didn't have him in the perfect settings, but we had never had any sort of problem before, and now this. I'm confused.
Anyone have any thoughts as to what may have went wrong?