New user. Question about Sierra Newts' toxicity

[andiskimo]

Hello enthusiasts. I'm a new user. I have a number of different newt species, and I'm wondering if it's safe to house similar-sized Sierra/California Newts with other species. I've read that their skin is toxic, and newts sometimes bite each other when they're in a feeding frenzy. Will their toxic skin kill other newt species (i.e. Spanish Ribbed Newts).

I've also heard that certain fire belly newts have toxic glands in their neck...so I have the same question about that.

 

[andiskimo]

I also believe I have a matched pair of Spanish Ribbed Newts and Danube Crested Newts...any advice on encouraging them to breed? Play some Barry White?

 

[sde]

I wouldn't recommend it. Even though T. rivularis is the least toxic of the genus, i imagine it still has plenty of toxin to harm a different newt species.
Also, those two species do not have compatible care requirements. T. rivularis lives in the forest outside of the breeding season, and breeds in streams, whereas P. waltl lives in ponds.