Named after Tasman Sea between Australia and New Zealand, the Tasman Manx is a tailless or partially tailed Manx cat with a curly-haired coat not unlike that of a Selkirk Rex, due a recessive mutation which arose in Manx litters in both Australia and New Zealand. As of March 2013, the breed is only recognised by the NZCF[40] and the Catz Inc. registry[41]: 222–227 (also of New Zealand) with breed standards. The coat may be short or semi-long.
The type arose possibly without existing rex mutation bloodlines (and none of the rex breeds are permitted as out-cross partners with Tasman Manx in Catz breeding guidelines).[41] Depending on length of tail (if any) and coat, kittens may sometimes be termed "Tasman Cymric", "Tasman Isle of Man Shorthair" or "Tasman Isle of Man Longhair", but these are not considered separate breeds. The term "Tasman Rex" has been applied to cats with this gene that do not fall into one of the previously mentioned labels[42] (lacking the Manx face and body shape to qualify), though relation if any to extant Rex mutation breeds is unclear. All of these additional terms beyond "Tasman Manx" appear to be "recognised", even promulgated by NZCF[42] but without breed standards, and even the permissive Catz registry does not include them as of July 2014.[41]