My zoas dont seem to take food while my Palys do.
Hummm...
My "zoas" (Zoanthus spp.) do take food. Some of my Zoanthus spp. are actually fast to grab the food particles. Some of the smallest aren't as fast as the palys to close and grab the particles, but they do take food.
Which seems weird because all zoas are palys but not all palys are zoas
I think you're a little confused.
Here are the definitions, as I understand people use them for:
"Zoas" = Zoanthus spp.
"Zoas" = Zoanthids in general.
"Palys" = Palythoa spp. or Protopalythoa spp.
The definition of the terms above are how people normally refer them to.
"Zoas", as Zoanthids, is the general term for Zoanthus spp., Palythoa spp., Protopalythoa spp., etc...
For example: My "zoa" tank.
That would be a tank with all different types od zoanthids.
Another example: My zoa doesn't eat.
That normally would be reffered to a Zoanthus spp.
So you can say that all "palys" (Palythoa spp., etc) are "zoas" (zoanthids), but not all "zoas" (Zoanthus spp.) are "palys" (Palythoa spp., etc).
That would be the opposite of what you've posted.
Hope that helps to understand!:thumbsup:
Grandis.