Reptile & Amphibian Forums

My question seems rather stupid in my opinion, and with 10 years of veterinary experiance I really should know the answer but here goes. I have been incubating an egg for 41 days now, and it has grown quite a bit in size. I don't see any signs of dehydration or fungus and everything seems to be going well. My question is, if it's growing in size, that means it's fertile, correct? I feel kinda silly for asking.

Generally yes that ussually means it is fertile but the best way to check if it is fertile is to candle it after it is 2 weeks old. If you candle it and you see veins or it glows pinky orange it is fertile. An unfertile egg will be white or off yellow when candled. Considering it has been incubating for 40 days when you candle it, it might just be dark and if it is that is the baby gecko. GL

I have candeled the egg several times and each time it seems like I see more veins...which makes sense since it's larger...theres a large pink area around the middle with the veins in it...pink, yes it's definatly not dark though. Maybe it's a light gecko. I dunno. We'll see I guess.

Depending on incubation temperature, a gecko is unlikely to have developed pigment at 41 days. if your incubating at around 85 degrees i would expect it to hatch in about a week