Ohh ok! Great! She is eating tropicka fish flakes is that ok?
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If that is tropical fish flakes, it is alright just if he is eating them. Be really careful about not over feeding - fish flakes turn to ammonia pretty fast and can cause water quality issues, alarmingly fast in a small tank. I don't use flakes in small tanks.
For the basic food I would recommend Hikari Bio-Gold with supplements of freeze dried or frozen foods Like Hikari Blood Worms, Tubifex worms, live freeze dried or frozen Brine shrimp. Any uneaten food can turn to ammonia, so just watch out for that, and keep up on the pwc.
Here is a pic of one, the lighter one is the male and a similar color pattern to yours but female and darker.
and my favorite from a long while ago...