>>If we could solve that, it would be great. If those fortunate few of us who do collect were to establish a system, perhaps starting with the already common use of terms like "Rio Mamore", and "Rio Tefe", and building on that, It would be great, even if it only was maintained among the growing network ok Apistophiles who are online and in groups like the ACA and ASG.<< There are killies in the hobby that do not adhere to the location and collection code systems. These and color morphs are referred to as "sport" strains and most serious killie keepers avoid them, with a few exceptions. There would still be a large number of "sports" available commercially even If Apisto-philes were to adopt such a naming convention. However, it would still allow purest to maintain distinct strains as well as maintain the value (i.e., price) of those fish with known locations over those without. FYI - killifish can have both a location and a collection code attached to their name. The location code refers to a geographic landmark to help identify the collection site. The collection code refers to the notes of the collectors. For example, there's a new species of Notho that was just collected last year by Ruud Wildekamp, Brian Watters and Barry Cooper on May 31, 1997 from a locality on the Rufiji River floodplain in Tanzania. The provisional name assigned to this species is Nothobranchius sp. Kitonga north TAN 97/9. Kitonga refers to a geographic location near the collection site while TAN 97/9 references the collectors's notes as being the Tanzania trip, 1998 collection site #9. It can be an intimidating system but has proven necessary with killies. There are cases where some fish from the same species that come from different collecting sites have proven to be infertile. Keeping the strains pure help reduce this from being a problem in the hobby. Meanwhile, some folks are doing genetic research to better understand the differences between species rather than relying solely upon physiology. Bill Vannerson http://ourworld.compuserve.com/homepages/william_vannerson