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[sea_nacl_h2o]

Does anyone out there know about blue green chromis courtship? Two of my six chromis are acting a bit funny. The largest of the chromis keeps going to one spot behind my live rock and the second of the largest is following it. When the second of the largest gets close to the largest chromis it starts to get small light spots all over it. Then when it swims away from the largest chromis the spot go away. Can anyone tell me if these two are going to breed? Which one is the female?..the largest of the six chromis or the second largest.