Is there a reason you are testing which they prefer? I have this weird hangup with feeding non-terrestrial food to my fish such as lettuce or similar leafy types. I keep sea grapes, caulerpa lentillifera, in my refugium and feed that from time to time. We can't keep that anymore in California so I am moving to gracilaria parvispora which is red. There is also a similar yellow so seeing which one I can grow fast enough to feed my tangs.
Hope your day is well.
Hope your day is well.
