From reading the ALA objectives another aspect jumps out at me as needing discussion in the context of what could be online:
-to publish a journal on a regular basis containing original and other educational articles covering livebearers and their maintenance and breeding;
in the context of: advance the science of ichthyology by stimulating interest in and encouraging study of freshwater livebearing fishes,
why a journal for member's only? same reason as a paper trader. It was the only way to do it back then. and how does that fit with the goal of stimulating interest? It provides info to ppl who are already members, but doesn't do anything for the masses who keep livebearers or who might want to keep livebearers. Info has to be public to bring new ppl into the hobby. Note here I'm not suggesting you make your journal public, but rather to consider what content could go up on the website that would serve that purpose.
I was looking around a bit and ACA's journal is member's only, however, they do make the TOC public to stimulate interest and they do allow member access to back issues online. I think this is a perfect model for this website as it shows non-member's what they're missing by not joining.http://www.cichlid.org/BB.html
It looks like AKA is set up very similar to ALA in that the majority of their publications are member's only.http://www.aka.org/aka/modules/content/index.php?id=50
They do have some articles up under their library link in the sidebar.
AGA has articles online, but their newsletter is member's onlyhttp://www.americangoldfish.org/new_page_58.htmhttp://www.americangoldfish.org/new_page_582111112112.htm
NANFA - their journal is member's only.http://www.nanfa.org/ac.shtml
and they have a NICE set of public articles. Here's one on keeping native species in captivity.http://www.nanfa.org/bcccaptivecare.shtml
and other species profileshttp://www.nanfa.org/fif/comanche.shtml
That ties back into the wiki suggestion made earlier. I think it would be nice to set up either articles or a wiki with and pages on each species that follow a standard format, e.g. location, basic care/husbandry, breeding, nutrition, etc. so when ppl are searching the web for info on livebearers they are interested in, the search engines point them here.
another thing that comes to mind is perhaps providing a place where local livebearer clubs could post news as to what they're up to.