Bumblebees about to spawn ??

[Kingcichlid87]

hi guys i havnt got alot of experiance with malawi cichlids to be honest althougth i have done a ton of research on the scecies.

i was watching my bumblebees last night and noticed one of the males darted infrint of a female and kinda vibrated infront of her for a second. was that a display that he wants to spawn with her. ?

if so how long would it be before she lays eggs?

i have coral rock and lava rock setup eith a few bits of flat slate on the bottom

i kow they are mouthbrooders but do they have place they would rather lay there eggs before they pick them up ?

thanks guys