A fish’s nighttime sac

Quiet Pages

A queen parrotfish reportedly forms a roomy mucus sac for nighttime rest. Swipe to see when it forms and what the account says.
Come sundown, the queen parrotfish slips into a reef crevice and secretes mucus; in about 30 minutes, it rests inside the sac.
The account describes a resting sac; it neither calls it a defensive slime cloud nor compares mechanisms.
That reported adaptation hints at how specialized reef life can be.

A fish’s nighttime sac

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