Photo: Is she actually a he?

[Tarabull]

So I've had my lesser siren a few years. Her head was always pretty flat so I assumed female. Over the last 6 months I've had my doubts. The lump on her head isn't really pronounced like I've seen some males though. Is she just normal, over weight, or a male? I do feed her a little more than I should, I think, and she is pretty big at around 19 inches long and a couple inches around at the roundest part of her body.

The first picture is from months ago and the other is from today. Please pardon my slight algae bloom.

 

[Bellabelloo]

Looks like you may be correct and that you have a male.

Caudata Culture Articles - Sexing

Caudata Culture Species Entry - Siren intermedia