Do arthropods feel anxious during molts?
Highlighted Article: Molts impose developmental stress in crayfish, under the control of ecdysteroids, and cause transient light-avoidance b
The Company of Biologists
Tl;dr - Molting makes crayfish exhibit anxiety-like behaviors but they calm down if you give them benzodiazepine. They're especially anxious immediately after molting, but are slightly anxious before too. This may be generalized to all arthropods.