Black Damsel fish

Kunal Patel

Member
Hi
I have two black damsel fish in my aquarium. I got them both when they we white with a yellow dorsal fin.
The smaller one has turned turned black as they are suppose too. The other larger one has stayed the same color.
The larger one that has not changed seems to be the dominate one. Does anyone know why it has not changed yet?
I was thinking something to do with dominance. I have had them for at least a year, and they are getting close to 2 inches in size.
20190522_133925.jpg
 
Top