I will, thank you. It is not serious right now but it could of course escalate, especially as they get bigger. I've raised Oscars to fully grown in the past.Hey ken31cay, If your Oscar's are doing occasional lip lock (even gentle) you might want to keep a lookout between them and check each one for any injuries as
they might be fighting for territory.
Edit: these two do mock breeding after water changes recently so I'm hoping they turn out to be a pair. I bred Tiger Oscars years ago.