[helene schoubye]

As you can see in the video clip of mine, its also around dinner time this male is ‘dansing’ or flashing, but its the same, – no not directly spawning but courtship behaviour it is. Impressing the females, making them interested. And probably also stimulating the female maturation.
And I am sure your male is big enough. They are small, I have a small male like yours two, same size almost, he has eggs now. They might still continue to grow though, but it sounds like he is starting to feel like a grown up fish 🙂
But you may be right, – its the beginning of courtship behaviour, they may not be quite old enough, the females may not be there yet.