My flagsfin angels since this morning has been not active doesn’t want to eat and has currently started laying on side. I don’t see any sign of disease or sickness and its breathing is steady not increased and not decreased. I know they’re sensitive fish and can be quite dramatic. Please help what could be wrong. It gets fed flakes, pallets, mega angel food in might’ve shrimp, as well as squid chunks and oyster muscle chuncks and nori