one inch per gallon rule

[StanTheBetta]

I like the formula that is on the tank volume size page, I forget that addy but its webbed in this forum. It takes into account surface area and gives you a number. For instance my 10 gallon tank according to that formula could have 16. something inches of fish. Of course like others have said inches only works for the length of the fish when its below 4 inches.