Thank you, Helene, for your answer. And thank you for showing me the link to this wonderful tank! That’s my ideal of a tank – open surface, plants growing inside and out.
The tank this thread refers to is not covered, too – because I keep my miniature orchids and tillandsia hanging over it to benefit from the ascending humidity. I plan not to fill it up to the rim, when I change the setup, but to leave a little space to let Pistia grow on the surface.
So if you think there’s still a chance to breed Parosphromenus even if they are not separated pairwise in a small tank, I think I will try it. It’s surely more of a chance for breeding than deciding not to keep any paros in this tank at all 😉 ………It’s not my intention to keep several species in a mixed community. Just some individuals of one single paro species (how many??) and a small flock of Boraras, to give the paros the quiet they need.
There are still some Tanichthys in the tank now, which will have to move ….. And I have to change the water settings. The water now is very clear and not peat-filtered. The plants will have no problem with the new water, I think – they are Microsorum, Fontinalis, Cryptocoryne and Najas guadalupensis. The picture shows the actual setting – just to explain why I don’t like the idea of separating the tank into two halfs.