Not all of them need hides. My normal girls and my male pastel are all fine without hides. But I have 2 that will hide in their water if I don't give them a hiding spot. If I were you, I would give them hides anyways just to be safe. A hide never hurts but it sucks having to change the substrate every day because a 1000 gram female likes to hang out in her water dish and displace it ALL. lol
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