my biggest fish would have to be my angel he is somthing like 13 cm in hight including fins
my longest fish would have to be my blcokhead cichlid he is 12 cm in lenght
The biggest fish I've owned is probably an Angel I work with a lot of big ones though, and my silver/bala shark is approaching 6-7"
One of my workmates has a Barramundi which is pushing a metre at the moment I believe (approx. 3ft) it probably won't get too much bigger, but it's only 5 years old and can get over 2 metres in the wild