Just to help you understand the ID:
Physical aspects of a male octopus:
- Looking at your first photo note there are several enlarged suckers
- In the second (and you will notice it in the first) you will see a curled up arm. That should be the third arm to the right (clockwise) but the arm positions are difficult to enumerate in the photos (and with Puddles, my octo, all but impossible to determine all the time due to his crazy arm movements).
- color and small frame, arm to mantle ratio about 5:1
- purple lining on suckers (also true of hummelincki/filosus)
- Neogonodactylus (darn it Roy couldn't you have used just Mantis - spelling that kills me) and Muctopus have studied this complex in situ and in lab for years
Additional observations for you to watch for
- A star pattern around the eye
- Little horns to appear over the eyes.
- Wonderful skin Patterning - Muctopus' avitar is another look for this animal. Check out some of her video for this species (try YouTube search huffard aculeatus)