This article is from the Aquaria Newsgroup Topics and Conversion Tables FAQ, by Todd Zebert and Erik Olson with numerous contributions by others.
With the explosive growth of the web over the past few years, there
are so many sites coming and going that it's impossible to name them
here. One way to find them is to use your favorite search engine.
Another good "jumping off place" is Fish Link Central, at
http://www.fishlinkcentral.com. The old Caltech index at
http://www.cco.caltech.edu/~aquaria/ is being phased out, but should
remain for a time.