Zoas inverting

[dc4]

Does anyone know why Zoas invert themselves? I have a few that open up all the way back so that they end up looking like mushroom caps. Too much light? Its strange cause all the others are fine and only about 10% do this.

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[toytech]

Ive seen mine do that when im feeding them , and the mouths get big and stick out .But they do go back to normal quickly less than an hour.

[dc4]

Its so odd, they won't even close when touched.

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[PurpleMonkey]

I have some that do that too... after a while they go back to normal so I don't worry about it too much