I will make a wild guess that Simon is somewhere between 5 and 7 months old. Tracking backward from Octane and OhToo and assuming a 12 - 14 month life span I would have guessed that interaction started somewhere at this size and age.
I am sure that Monty will be the dwarf version of the Caribbean Two Spot (I hesitate to use hummelincki or filosus anymore because I am convinced there is a small and large version of the Caribbean octopus with eyespots ) and I don't believe any of the smaller ones ever became overly social. Serendipity and Maya were my small females but others with the small ones seem to have similar low interaction. On the other hand, the larger ones (with the possible exception of CaptFish's Penn who may be something else) seem to be human attention seekers.
I am sure that Monty will be the dwarf version of the Caribbean Two Spot (I hesitate to use hummelincki or filosus anymore because I am convinced there is a small and large version of the Caribbean octopus with eyespots ) and I don't believe any of the smaller ones ever became overly social. Serendipity and Maya were my small females but others with the small ones seem to have similar low interaction. On the other hand, the larger ones (with the possible exception of CaptFish's Penn who may be something else) seem to be human attention seekers.