Yup! I don't have any fish! Every gold fish I have ever had died after like 1 - 2 weeks I used to have had 2 beta fish in the past. My 1st beta fish died after about 1 year, the other one died after about 8 months I think. So I don't get fish anymore..i was going to say if you had like 31 fish it would have to be a huge tank