Hi Bennie, nice to hear from you!
Yes, if you have the parvidentata since 7 years, they surely reproduce in your tanks!
Funny that you also tell about the P.phoenicurus that they are very careful with what they eat! I have decided to give them only very small mosquito larvaes, if they find them a little bit too big, they prefer to study how they grow up and bite us humans ;-).
It’s also funny, because they seem to me to be the most aggressive species of my three (Linkei, Phoenicurus and Ornaticauda).