I had yoyos with angels. The yoyos began harassing the angels, so the loaches went.
I saw no tubes down on your angels in the pics, so there is probably no current spawning happening? One way to know a pair of angels is interested in spawning is that they first tend to clean the surface where they intend to spawn. So if you watch for that behavior you can get a heads up that "love is in the air, oops water."