Hi there
My son would love some pet fish and I have promised him two goldfish. I don't have space for a huge tank. Probably one 45cm x 20/30cm. Growing up I kept goldfish in a similar size tank - and one lived for 15 years (I think it may have been a carp) so I don't really go in for the 45L per fish theory. Can anyone recommend best way to keep a couple of fish in this smaller tank?