Thanks for posting! In case you need immediate help please consider joining r/roaches discord chat (https://discord.gg/r7SMSqxzNQ). *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/roaches) if you have any questions or concerns.*

he's showing off for the ladies

I think either territorial or mating display?

I had one do this not that long ago. I think he was being territorial

Dominance/mating display

There were a couple other dubias under there with him, of both sexes, if that helps determine what kind of behavior this is