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Can you help me determine the gender of my smooth newt (Lissotriton vulgaris)?

Cyrus

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Hi, I recently bought two smooth newts (Lissotriton vulgaris). The guy I bought them from told me one of them is male and the other is female but after I did a little bit research, I got confused with my "supposed" female. Can you please tell me what's its gender? I uploaded a few pictures of it.
 

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Cloppy

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Male smooth newts have a much more developed wavy dorsal crest in the breeding season. Females are particularly difficult to tell apart, similiar in size, the best pointer is the darker spotting or speckling on the throats of Smooth Newts. ( Copied and pasted from another article on smooth newt sexing.)
 

caleb

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I think it's a young male, because it has:

a black cloaca
a dotted line along the back where the crest will develop
large spots on the belly (females usually have small spots)
a black stripe on the mouth

I would expect the cloaca to become darker, and more spots to develop on its sides as it matures.
 

Cyrus

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So it's a male :(
Thank you so much for your answers.
 
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