My oldes fish was 3 years old. He was in a 1 gallon tank That was befor I new about how to care for fish and what they need. But I have now had my 20 gallon for 4 months and I'm still doing great! A little over populated but o well
Well not me, but he was mine when I stayed with my mom and dad. My dad has him now but hes a 10year old Pleco, soon to be 11, I got him as a child and hes in a 700g cemented tank in their house, its really nice. Hes just over a foot long, and is thourougly spoilt!
My oldest fish right now is Marty and he is 8 1/2 months old now. He is the oldest Betta I have and I may have an older Otocinclus catfish but I do not remember quite when I got Tuck but he is very nearly as old or older, perhaps 9 months old. I have only been keeping fish for 13 months though.