Fishes fiShes

My father likes fish. My house has 7 glass aquariums and 2 big cement aquariums. When I was a child, I always saw my father cleaning up the aquarium, feeding the fishes, looking at those creatures swimming freely.

What is burried in my sister and I? I'll not rear fish, but I'll help my housemate to take care them. My sister also helping her housemate to take care the fishes. :)

This is the photo i took from one of the cement aquarium.