Yeah, judging from the coloration of the one on the right, I'd say that's a male getting in the mood for love - congratulations, that means you're doing a good job.
Barbs (if I recall right) are egg scatterers: the female pops out the eggs, the male fertilizes them, and they pay no more attention to them. (Except sometimes eating fry they can catch) I don't think you need to do anything else special.