My new Fish tank for my 1 year old Goldfish, i started keeping fish 3 years ago, i was what you call a "monster fish keeper" up until a month ago when my 3 beloved jack dempseys died( one was 9 years old) 40 gallon tank was infected, so iv decided to keep little guys from now on. If you have any ideas you wanna give regarding a tank mate for this guy, im all ears??