This question is really difficult to answer. Both types of molluscs live in oceans with coral reefs (except for some species, such as the king squid, which live in the deep sea) and live as brachiopods and cephalopods. is not very long, and their food loss is also quite peculiar. It is still unclear whether they can be fed food. (Most fish can be fed processed foods.) So it is probably difficult to raise them and therefore they are not allowed into the aquarium.
Why are there no octopuses or squid in the aquarium?
Introduction Why are there no octopuses or squid in the aquarium? This question is really difficult to answer. Both types of molluscs live in oceans with coral reefs (except for some species, like the giant squid).