Have you double checked the answers of Armin and Peter on your question about P. opallios in the 1st thread about this import?
P. Opallios was simultaneously present on the European market in 2013, … and Bernd is right about the fact that all fish are collected in Singapore.
This knowledge and the pictures, especially the one at the bottom of Martin Hallmanns description of this species on the German IGL website, make me even doubt about the ID my ‘tweediei’ couples. I don’t like to doubt, although it doesn’t change or influence the importance of the fish at all.
I’d like to find out more about the importance of the width of the black band in the caudal fin. Unfortunately, the book of Horst Linke is not present on my bookshelf. But I do recognise and confirm your descriptions of the behaviour of our fish.
This makes me wonder about the observations of the persons named Menzel (spring census 2014) and Mogens (autumn census 2013). Armin told me that he thought that these tweediei had been catched as small, young fish, and had grown up in a tank before being exported. At that time, I didn’t ask him why he thought so.
I have posted some new pictures of the juveniles I have. It will allow you to compare one day.