I've read they are very vocal during the spawning ritual, and who knows, they may well communicate at other times as well.
The only change noted at this time is that the males started to color up. They remain colored, and I've set for many hours at different periods watching, looking for some sort of change in behavior. I can't say that anything has changed yet. I expected to maybe see 1-3 grouping and swimming together but haven't seen any such behavior yet.
The females "look" like they are ready to blow up, just haven't noted any change yet.
I have high hopes for the RS.. I've ran across the same quote several times from a gent that says he raised some of these as a kid and determined that due to his "lack of care" with these, he felt they were nearly "indestructible".. I think that is a trait desired in a strong forage species.
13:46 on light today with a 76 dge temp and stable.