Six toed Danube cn

[chaimdov]

My son was helping me clean a danube cn tank. There are sixteen fully matured newts, and he noticed one of the newts has six toes on one of the back legs. It has a full crest and is otherwise identical to its tank mates. Has anyone experienced this with their newts?

 

[Azhael]

I expect by now the population of T.dobrogicus in the US must be getting rather inbred so this kind of thing is likely to pop up more frequently...
Polydactyly is not unheard of in caudates, of course, both congenital and acquired after a faulty regeneration (although you can typically tell the two apart), but it's rare.

 

[michael]

Anomalies like this show up in nature and in captivity. It is a curiosity but most likely does not indicate any big problem with the salamander.