Nautilus

Does anyone know where I can get a Nautilus? Also can I put them with other fish in my 40g fish tank?

 

Nautilus live in deep water and are not kept successfully in commercial aquariums well. They also get too large for home aquariums.

 

Not a good choice. Public aquariums have difficulty keeping them alive. They are also very intelligent and will bang against the sides of tank. Best left in the ocean.

You seem to want something more exotic than the average clownfish. Just make sure you do a ton of research before buying something for the sake of the invert or fish.

 

At least he's asking first, rather than asking about what care it needs after being in his tank. Just hope he follows the good advice he gets.