Deep Shaman Archetype - familiar fails validation
 

I have a bit of a weird one and I just want to confirm with others if this is a bug or if I am doing something wrong.

I've made up a 1st level human shaman and applied the deep shaman archetype. When I go to add the shaman's spirit animal / familiar, none of the options show as valid. From what I can see the familiar needs to have the aquatic subtype (and then gains the amphibious special trait). There are several familiars that should work (e.g. pufferfish) but hero labs shows an error on all of them.

Is it just me or is this a bug?

Thanks!