Who Gives A Fish Forums

Could be a dominance thing. If you've got a pecking order forming, the weaker ones might be hiding. Watch for any chasing or flaring during feeding time.

Hey, maybe they're just vibing. Not every weird fish thing is a problem. But yeah, check the basics first. Water, temp, tankmates, all that jazz.

I agree with the others. It's likely stress from something recent. Keep an eye on them and make sure they're eating. If they're still hiding in a week, might need to dig deeper.