Add Yahoo as a preferred source to see more of our stories on Google. Small fish in a small tank - surely that must be possible? No, so-called nano aquariums are generally not an appropriate home for ...

Some nano aquariums are tiny—and we’re not kidding. For example, a one-and-a-half-gallon fish tank may only measure five inches wide, conveniently sized for tight spaces. You also wouldn’t have to ...