What do/did you do when your first pet passed away?

[Mayhem]

I had two fishes, my sis had two fishes and my bro had two fishes, all in the same tank. It turned out a total fail because my and my sis's fish were eating all the food and bro's one's barely got enough to survive and eventually my and my sis's fish died due to obesity XD Though I think one of them died because of a fight because I saw scratches on two fishes. One on my bro's and one on my fish. So we just gave the fish away because we didn't want more dead fish. After that I didn't get another pet