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?