There is juveline Banggai cardinalfish in my sump.
I had previously raised one batch in my refugium. Caught the male from the DT and dropped him in the refuge. He released the fry few days later, and was moved to another part of the sump to recover away from the female.
The babies devastated all the zooplancton in the fuge. I raised them using brine, and some vinegar eels.