Lynnmw1208
New member
I've seen a zoanthid eat a NLS pellet. It opened it's mouth wide and ate it! They won't eat if I try to spot feed though.
I used to believe this but my thoughts have shifted for several reasons. First, have you every watched video of a colony of zoanthids on a time lapse basis? There was a good video posted here several months ago which demonstrated this, and I believe Mooch even asked his usual type of "make you think" question, like "what do you think those polyps are doing there?". You'll see every so often a different polyp "blink", or close and then reopen (slowly over several to many seconds, but looks like a blink in time lapse). Now I'm not talking about being touched or hit by a piece of crud and recoiling, or when one can watch a line of them close as a bristleworm slithers through the mat beneath the open polyps.
This "blinking" is, in my opinion, zoanthid feeding. Let's also keep in mind that zoanthids, just like palythoas, have a mouth. That mouth didn't just magically appear so zoos could put on lipstick. Those polyps with mouths have a survival advantange - the ability to ingest more and larger pieces of food than a polyp which gets its nutrition by absorption / diffusion across its external membranes.
I totally get and have experienced attempting to target feed zoos only to have them appear to not react at all, or to recoil from being pelted with a stream of water and food. They seem positively disinterested compared to some palythoas which are like little venus fly traps closing in around prey as soon as it makes contact with their skirt tentacles. But if you take a longer view (literally!), you will see zoos feeding, just at a glacial pace compared to their paly cousins.
Zoas can grab the food, yes. Their response is slower, comparing to Protopalythoas and Palythoas, but they will grab the particles.
I believe there is only so much food that can help zoas to growth. Primarily, the zooxanthellae relationship will fulfill their needs. I think they don't need or can't process the food as efficient as Protopalythoas and Palythoas. I feed mine once a week and they do fine. There is a difference when you feed, but there is more things involved. The fish food and other wastes in the water can contribute to that also, so once a week is more than enough.
Small amounts of amino acids and vitamins could help some. Small amounts!
Say, if you have efficient lights, a good skimmer, water change schedule, the right water movement, no predators, and good water quality, the feeding will add to it. If you have a tank with poor water quality and all the others lacking, the food can add as negative too because their basics are not there. The more food into the system, the more to be removed.
All that is also relative because how much is too much light? What about the water changes? Well, there is the balance, and basically speaking, it will depend on how many bioload one has in the tank to begin with.
Zoas don't need to be fed as much or can't be fed as much.
I found that when all the pumps (including the return) are off they tend to have a better reaction to the particles touching the polyps.
I like the Zoa/Acan food, from Tropical Marine and Microvore, from Brightwell Aquatics.
I've never tried Coral Frenzy yet. That's next!
Grandis.
Where do u get the tropical marine acan/Zoa food??
is coral frenzy really that great?