» Amazing Stingrays    An e-mail list devoted to stingrays including their maintenance in home aquaria.    http://groups.yahoo.com/group/amazing_rays/

» Cowfish, Puffers    E-mail list devoted to Tetraodontiformes: cowfish, boxfish, puffers, triggers, filefish, and related species.    http://groups.yahoo.com/group/CowfishPuffers_andMore/

» UniQuaria    Moderated high-volume all-species freshwater e-mail list.    http://groups.yahoo.com/group/uniquaria/

» Yahoo! Groups: Saltwater Fish Tanks    Advice and discussion of the keeping of all saltwater fish both on-list and in chatrooms.    http://groups.yahoo.com/group/saltwaterfishtankssft/