nautilus from the minecraft live and future game drop the mounts of mayhem

I really like the new Nautilus mob idea and the unlimited air mechanic is very creative. However, I think using pufferfish as the taming item might not be the best choice. In real life, pufferfish are highly toxic and would not be eaten by nautiluses, which are slow scavengers. This feels similar to the firefly and frog situation where the design was changed because the prey was poisonous. It might make more sense if the Nautilus could be tamed with tropical fish, cod, salmon, or even a new deep-sea item instead. That way the mechanic stays fun and balanced but also avoids the mismatch with nature.