Definetly no chart, I can show you two of my babies that hatched the same day and one is twice the size of the other. One has eye problems and doesn't hunt for food that well, that being the reason of the size difference. But trust me the little one is quite fiesty and in good health other then the eyes.
I would just say, don't try and sex your gecko yet, becasue you will think it's a girl. It looks to be very young and normally you can sex anywhere from 4-6months.
I'm guessing male. But as said already he's a little too small to tell for sure. If you can get a photographers loupe you can look at the pores and see if they are actually pores or dimples. Females this young can look like they have pores to the naked eye, and males can look like they have no pores. Best to just wait.
From that pic I would say female but it may be too young to tell yet
I just look for the bulge under the tail for male at around 4 months or around 20-25 grams-whatever comes first
I buy most of my Leos from Breeders that temp sex their geckos and usually are pretty accurate so I don't usually worry to much about sexing them
Also they are all kept alone so they are no problems with growing young Leos of the opposite sex being kept together
Sandy
PS- I agree-Great pics Felicia !!
one thing ... When i bought my gecko ... They were like 5 or 6 in the big cage ... So ... I've read that male need to be alone ... so they must be female .....
When they are young like yours is you can sometimes get away with housing multiple geckos. Once they reach sexual maturity at about 6-8 months males will need to be seperated. Sometimes you will even get females that don't like to play together. Most pet shops will house groups of geckos, this helps cut down on their cost to care for them.