I believe they are Sun coral polyps, or cup coral. They stay closed until the evening (or after I introduce food into the tank) then they open up & look amazing. I have the orange colored ones & the bright yellow.
They really add color & since you don't have to place them in a well-lit area, they can brighten up those darker spots of the tank.
I'm offering a per-polyp deal on these so you can mount them & have them spread in whatever area you'd like. I think my price is fair considering no one else has them for sale, especially this color.
You will need to feed them at least 3 times a week (I feed them daily along with my yellow polyps & my larger button polyps) which accellerates the growth. Holler at your boy if you're interested.
The pics are shameful but when I find work again I will invest in a good camera.
Actually, what I have looks like both, I have the orange colored ones & the bright yellow colored ones, except mine look much better than those in that pic.
Please only post if you're interested in buying the item.
If you think the item that the seller is selling isn't listed correctly, then post what you think it is. But lets know get into an argument over it, just don't buy it.