This group of Aplocheilus lineatus Golden Wonder Killifish were all hatched out by December 7th . Three weeks old at this point and roughly one inch in length . This morning , just out of curiosity , I sprinkled a few Drosophila melanogaster wingless fruit flies in for them . They took them ! Three weeks old and eating fruit flies . They’re miniature versions of my breeders which will eat anything that doesn’t eat them . This is a Killifish which is known to be very predatory so I don’t know why I'm surprised . They should start growing faster now .