Good aquarium overview sites?

[Stella]

As many of you know, I am writing a book on keeping native fish in aquariums.

I am trying to keep it focussed on that and not delve into the time and space consuming details of general aquarium husbandry which have already been thrashed out in books and websites all over.

I would really appreciate some suggestions of a few excellent sites or books that are relevant to COLDWATER aquariums (many are really only relevant to tropicals, some cover both) and cover running an aquarium. I want to put a couple of really good resources in the back of my book.

Also:

I am quite a fan of this site: http://www.skepticalaquarist.com It is great at explaining away the pervasive myths and goes into great detail so you actually understand how and why, not just 'do this'. What do others think of this site?

Thanks heaps