4 links
Amazing Stingrays
groups.yahoo.com
An e-mail list devoted to stingrays including their maintenance in home aquaria.
Cowfish, Puffers
groups.yahoo.com
E-mail list devoted to Tetraodontiformes: cowfish, boxfish, puffers, triggers, filefish, and related species.
Yahoo! Groups: Saltwater Fish Tanks
groups.yahoo.com
Advice and discussion of the keeping of all saltwater fish both on-list and in chatrooms.