Fortunately, I don’t think any of them have it yet. I went ahead and used a flashlight to light the fish brightly and they look very uniform. No small particles on them when viewed with bright light. Probably that photo looks that way because of the flash and small particles in my water from the oak leaves. It is good to know to watch for it. I wouldn’t have known to watch for it otherwise.
I will watch for those tablets as it seems like something I won’t be able to find locally, something I need to just order online and keep in stock for emergencies.
Thank you for your help. I really hope to be able to find more Paro’s at some point. They are not that easy to come by here. Someone else I know ordered those P. tweediei and her order came in today also wild bettas. She had ordered them previously and the first ones she ordered looked different she said. No idea who has those ones now though.