Those are both Scleronephthyas. They are the one of those corals most struggle with long term. They seem to go perfect for 6 to 8 months and then shrink away. I have never been able to keep them longer than 8 months. You might look into Fauna Marin foods. They have mucus and bacteria products that these are suppose to feed on. truthfully no one knows but better to throw the kitchen sink at them.
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