Hi Helene and Sverting! Thanks for the positive and optimistic reactions. Indeed, last Saturday, I made a small excursion to the shop of a forum member in Holland. He even had some Parosphromenus ornaticauda for sale, but I preferred to stick to my plan: not to keep more than one species in a tank.
Besides, during more than a year I had been thinking of buying myself a larger tank. It would have been nice for the many, small but active, rainbowfish I was keeping at that time. The 5 P. bintan make me realize that I’ve got what I was dreaming of: the (same old) tank suddenly looks huge.
I will have to get used to their habits and behaviour, and so have they to mine. I’ll keep on feeding them on the same moments of the day, patiently expecting the day they will be waiting for food. 🙂