The black color on the fry looks like the same markings of your injured fish, I would have to agree with all the others that may be one of the parents. Your wife gotcha..
Good luck introducing all the fish if that is what you decide to do.. I am an amatuer so I am not sure which method offers the best survival for the fry..
Best of luck, your tank looks nice..

Good luck introducing all the fish if that is what you decide to do.. I am an amatuer so I am not sure which method offers the best survival for the fry..
Best of luck, your tank looks nice..