Good evening forum viewers. I have 6 new baby goldfish in my 90 gallon tank with 6 adults. I am not sure who the parents are but I am excited to raise them up! I come with a question the largest one does not appear to have an anal fin. Is there anything I should monitor besides tank parameters and a healthy varied diet to make sure it lives a good life? What variety do you think i should call it?
In the tank is a ryukin, lionhead, ranchu, 2 black telescope, and a fantail.
Photos available here
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Thank you!