Why would anyone document this process? Why would anyone share? Whats with the scepticism? Not many fish farmers / breeders are social media sharers although this is slowly changing. Dry fertilisation is very time critical so unless someone else is recording, it's unlikely to get documented. Also developing eggs - embryos make very boring subjects. One species look the same as any other until colouration or distinctive shapes occur.
I've got some photos of my post fertilised clown loach eggs, taken at least a decade ago. Happy to email you these privately if you do NOT share. Send me your email address via private message.