New to me isopod species

[sculpin01]

Has anyone encountered isopods of this sort before? They are actually quite large, with the bigger one in my pic being approximately 1 cm in body length. They appear to have the standard herbivore body type and I'm willing to bet they came in on KP Aquatics live rock.

Thanks!

 

[vetteguy53081]

Has anyone encountered isopods of this sort before? They are actually quite large, with the bigger one in my pic being approximately 1 cm in body length. They appear to have the standard herbivore body type and I'm willing to bet they came in on KP Aquatics live rock.

Thanks!

Looks like either munnid isopod or gamma pod

 

[WheatToast]

Looks like either munnid isopod or gamma pod

+1. Might also be one of these:

Idoteid isopod. These are very rare in the trade and appear to be herbivores, however, I had (and probably still have) some that nibbled at my manatee grass. These isopods are also common on floating seaweed here on the California coast, usually referred to as kelp isopods (shake some Sargassum in a water-filled container to release the isopod storm).

 

[sculpin01]

Those do look similar. These number in the tens of thousands in my tank. Literally every surface with any algae has them. Interesting thing to me is how awkward their movements were in the bowl I captured them in. They had significant difficulty in righting themselves once flipped over and moved slowly. Very odd.