As I mentioned before, I bought five cow ranchu from an importer in Indonesia (Jakarta Goldfish Centre). They came from De Quan Farm in Fu Zhou, China. Only one male survives until now and he has been my favorite so far. One amazing feature of the fish is the growth of its black pigment. When I compared the fish before and after, I can hardly recognize him. So, it is confirmed that the black pigment in cow ranchu can grow.

This is the picture taken on December 2019:

And this is him in October 2020:

Marvelous, isn’t he?

However, the growth of the black pigmentation on the offspring is quite challenging. Until now (almost 4 months old), the black pigment does not seem to grow at all. Most of the offspring are white with some black spots underneath the transparent scale, which look like bluish or shadowy color. I am hoping that the black pigment can come out to the outer layer of the transparent scale. Some people reported that it usually happens late on the fish. Hopefully they are correct. The rest of the offspring resemble calico. I will post their pictures on the next posting.

Feel free to share what you think about the transformation of this cow ranchu on the comments below 😊 Thank you.