Hello, Peter,
thanks for your extensive response. I am afraid, I do not know anything about the origin of the fish. I got them from a Czech dealer who claimed they came from “Asia” (how astounding!). He didn’t respond to my further questions ….
So I think I have no male with which I could try as you suggested.
But something occurred in the last hours which I would like to show you. I had the tank with the fish in another room for a while, but I took them back to my working room a few weeks ago. Now I can observe them more closely – which I did this afternoon, and made some photos.
Don’t blame me for bringing up the old question again – but look at these photos:
Is it possible that females show sexy eyes when chasing other females? Is this observed not only in courtship, but in aggressive behaviour, too? This one on the pictures is the one which was in question from the beginning – having a rather dark caudal fin colouration. The fish is sitting beneath some leaves near a bough most of the time. There is no cave in the tank – because it’s inhabited by females only. I now put in a cave – to see what happens………..
(Please excuse it if my photos are not quite good – my camera has a serious defect, showing broad bars in strange colourations and disrupted pictures. I show only the best pictures I can get now)