Thanks for the input here, folks. I know my fish appreciates it.

1) If you possibly can, swap him into a tank just a bit larger (actually,
as large as you can reasonably accomodate, up to say 10 gallons).

Alas, he's a cubicle companion here at work. Even the 1 gallon tank
is a bit of a stretch in some folks' minds. :/

If you just cannot increase the
size of his accomodations, I'd add two cardinals to his tank, and a small
amount live floating plants which are good in low light conditions (water
sprite). Increase your water changes to twice weekly if you add fish to
that one-gallon tank.

I like the idea of him having some company. I know fighting fish are
reportedly solitary beings, but to live your entire life alone? Would
a pair of Cardinal tetras be better company than a female of his own
kind?

2) If you could add heat to get your temperature up to 82-83 degF,
that'd
be ideal. I saw some small-tank heaters for ~$8 in Wal-Mart the other
day...

That's where I got his 1 gallon tank, so I'll look for a heater for
the lil' guy.

Thanks!

-Fleemo