How can you tell if your goldfish is overweight or underweight?

Answer:

Underweight: the head will be wider than the fishes body

Overweight: the fishes body will have a disproportionally large pot belly (please note that certain kind of fancy goldfish such as ranchu, pearl scales and lionhead naturally have a pot belly)

First answer by Ilovebulldogs. Last edit by Ilovebulldogs. Contributor trust: 64 [recommend contributor recommended]. Question popularity: 1 [recommend question].