My 32g took about 6 weeks to fully cycle. That is, ammonia 0, nitrites 0. Until then, your tank isn't fully cycled. And I've seen each time I've added fish, I get a mini-cycle where ammonia and nitrites spike for a couple days. So, it sounds like your fish haven't experienced your tank with no ammonia or nitrites yet.
Sorry, can't really comment on the fish behaviour except to suppose that some of what you're seeing could be ammonia or nitrite related. But that's just me. I'm pretty new too. I saw some strange behaviours that have been gone for months since my cycle stopped. I'd suggest holding off on adding anything else until you get 0 ammonia, 0 nitrite.
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32g
Neon Tetras, Peppered Corys. Ottos
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