Thank you so much for this information. I just got it yesterday marked "Baby Girl" from Petco so we will definitely work on her health. I wouldn't have realized she is unhealthy so thanks so much!Caudal and ventrals indicate male. But it's a young long fin, so I could be wrong.
PS. . . . S/He doesn't look too healthy. Head is bigger than it should be. Stuff food 2-3 times daily - til belly is a bit round after each feeding.