Interesting and not a noobie mistake. Many shrimp can be aggressive but, with a healthy animal, the octo wins dinner. A noted exception is the mantis shrimp. An experiment @Neogonodactylus did with a blue ring several years ago resulted in an unexpected dinner for the shrimp and not the other way around. Size does matter in determining prey vs predator but, octopuses can usually take down shrimp close to their own size without difficulty. However, pistol shrimp have quite a punch (like the mantis) and may not be a good live food offering (not something we have other reports about). Roy?
It is likely that Seven is in senescence and weak. The skin is beginning to deteriorate, attracting the shrimp to dinner (or defense) and Seven can no longer defend or go on the attack. It is unusual that he is still eating and dead food offerings are likely best (if he eats at all).
Here is Roy's video from 2009. Note the size difference.
It is likely that Seven is in senescence and weak. The skin is beginning to deteriorate, attracting the shrimp to dinner (or defense) and Seven can no longer defend or go on the attack. It is unusual that he is still eating and dead food offerings are likely best (if he eats at all).
Here is Roy's video from 2009. Note the size difference.
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