Welcome @lukepeterjames!

We used to have a fish filled aquarium before but they all died and there is only one left now.

My son had a fish bowl and 1 goldfish. He's 4 and his fish died. The bowl got too small for fishie. He was devastated for days so I tell him that we could visit ocean park or places with aquariums to see fishes and pick our favorites there because they will take care of the fishies better and it will make the fishes happier. Hope your one fish left lives a long long life :)