Oktoputeao said:What is the difference between this two octos?
Bimaculatus: Body plus longest arm 30" (76 cm) long. Arms 4–5 times mantle length.
Bimaculoides: In 1949 it was discovered that there were two closely related species of two-spotted octopods instead of one. The second was named the Mud Flat Octopus (O. bimaculoides). This is the species most commonly found between high- and low-tide lines, on mudflats as well as among rocks. Its arms are shorter, 2 1/2–3 1/2 times mantle length, and its eggs are larger.
Black96WS6 said:Perhaps the articles you referenced are only referring to mantle length and not tentacle length? Either way definitely interesting information, as if that's the case, it appears bimac size between the two species is widely variable and more a factor of genetics than environment?
CaptFish;164736 said:from "Cephalopods: A World Guide"
Bimaculatus - The ocellus contains an iridescent blue ring in the form of broken chain links with spokes extending to the outer edge of the false eye spot. - small egged- size body to 20cm and arms 80cm
Bimaculoides- The iridescent ring with in the ocellus is in the form of unbroken chain links. - large egged- body 12cm and arms 35cm
pics of Ollie here: http://www.tonmo.com/cephcare/BimacCareSheet.php