We ordered an octo @ work a couple of weeeks ago (recieved it the following day) and was supposed to be a bimac. It is certainly not one. It came in labled " Costarican Longarm Octopus". I researched long arm octopus and got no real info on them. He is predominantly white (not stressed white, and actuall resting white) and displays diurnal behavoir. His mantle is approx. 2" in length and has good sized arms. He flashes red when eating/attacking prey, and can produce fairly large "protrusions"....around .5 cm. Not shy and tries to grab my hand when im scrubbing algae. He had the most expensive meal in Sacramento the evening of his arrival and now takes thawed squid, octo(i know....morbid), and crab meat. Ill have some photos on Firday for guess to sp. Oh and the guy who unpacked/acclimated him put him in a 50 w/ two angels and a wrasse. One angel down, one found scard for its life under a rock, and the wrasse unfortunatley abandonded ship. I was shocked that the person that has been doing shipments for so long would put a wrasse in a tank with 1/2 a versatop let alone an octo!!! Sorry for the long post, I;m very excited