^IME, no. I always see them resting in weird positions so they can camouflage with everything. I find them upside down under my sponge covering my intake, vertical next to DW, and in crazy positions resting between my giant anubias's roots/rhizomes.
IDK, I never see them eating, but mine are still alive after 2 months. I think they are nocturnal feeders, they are in my RCS tank, and I put in pieces of algae wafers in every other day.
Shweeett now i just gotta find the little buggers.
You are in CA, I am too, I could sell you/ship you mine at $2 each. I have 5 at the moment. Or I can get some from this local breeder I know as he carries them but he won't ship, I think.