This fish is simply beautiful, but I must admit that there are a couple things that bother me about this fish.
First of all, the lack of ventral fins. This can be a sign of the fish being raised in somewhat poor conditions. It's not much to worry about. If it is damage, they will likely grow back. If it is caused by something else like poor rearing conditions, then as long as the fish shows no other symptoms, it's no big deal at all.
Second of all, the fins are a bit large for a female. I have seen some long-finned females, however, so this is not a big deal.
Third, there is a membrane on this fish attached to the gills that is only found on males. It is that extra flap of tissue that makes the male appear larger and more impressive. It is highly evident in the last picture, where the fish in question is flaring.
Fourth, the body shape is long and slender, while females are typically shorter, and more stout, especially through the belly area. This fish has a very lovely masculine body shape.
Fifth, while there is a white spot underneath the belly that would give you the impression of it being an ovipositor, thereby marking the fish as a female, I honestly do not believe this fish is in fact female. Young males will with surprising regularity show what appears to be an eggspot. Usually, it vanishes by full maturity, but in some, it stays, even on fish that are VERY clearly male.
These are the reasons I firmly believe that your little girl is actually a little boy.
She's a 4 month old super delta tail female. I just love her bright red color. I decided to name her Jill.
