Ok, here's a stupid question. Regardless of tank size (within reason) what is the difference between 1 lap around a 300 gallon tank and 5 laps around a 60 gallon tank (assuming the dimensions are in direct ratio too)?
A tang or any other fish can swim a 100 miles a day in my tank just as easy as the wild ones can on the Great Barrier reef. His scenery is going to be the same each lap in mine but as long as I keep all the rocks in the center...? If he gets dizzy from "running" in circles, he can turn around and go the other direction.
Now before the tang police show up, I'm not planing on keeping any in my 65gallon but I'd still like to understand the reasoning.