Red Octopus, Octopus rubescens Berry, 1953 (Cephalopoda: Octopodidae), in the Mexican tropical Pacific

“ Octopus ” rubescens Berry, 1953 is an octopus of temperate waters the western coast North America. This paper presents first record O. from tropical Mexican Pacific. Twelve octopuses were studied; 10 collected in tide pools five localities and two mature males caught by fishermen Oaxaca. We used morphometric characters anatomical features digestive tract to identify species. The along Pacific provide solid evidence that populations this species have become established waters.