There
is some debate about whether or not hexagon fish tanks are “fish-friendly.”
This may seem like a silly question. It may seem that fish are happy
as long as they are fed and remain in a clean, well-maintained environment.
This is true to some extent, but don’t you think that fish would
be happier swimming about in an ocean or sea or more “natural”
environment? Yes.
And it is in this sense that they may not be as satisfied living
in hexagon fish tanks. While no specific studies to note have been
done to ascertain whether or not fish are more likely to become ill
or have lessened lives while living in a hexagon-shaped tank rather
than a long rectangular one, there are reasons to believe that lifespan
could be decreased by such an environment.
Fish can swim better when going back and forth in long, rectangular
tanks. In hexagon fish tanks, on the other hand, fish can only swim
around and around. The motion is less natural.
That being said, hexagon fish tanks can be very attractive and interesting
additions to a home. If you really want one, make sure that you get
a large enough one with lots of swimming space. And make sure that
you buy small fish.