I have several large fish in a 200 gallon pond. A 17 yr old, 25 " ID shark, A 4 yr old 17" Imperial ID shark, 4 yr old 22" Golden Clown Knife. I also have a 100 gallon tank filled with many not big enough for the pond fish. I would like to gain wisdom and share my own with fellow monster fish keeper. I have yet to meet someone with an ID as old as mine. I have heard of one bigger. This website could be what I have been looking for.