[Peter Finke]

Dear “Oberhausener”, your finding in the “Wochenschrift” of 1912 is remarkable. Is that really true, is that advertisment dated from 1912??
There is – to my knowledge – no proof of a Parosphromenus being imported commercially earlier than in the thirties of the 20th century. And then only some fish as a “side-catch”, and nobody was interested in them. There was certainly no specific book on them (there is none at present …) and we don’t know of any detailed article in magazines. All that began after WWII (as you mention rightly).
It would be useful to know the company which authorized that advertisment. It is really remarkable. It’s one more of the few dates we have on the history of the knowledge on our fish.