I got me some new fish yesterday:
No doubt possible about this being sumatranus. I got seven of them, but I found it quite difficult to distinguish female sumatranus in a tank with 200 scared Parosphromenus. I think I have two or three females. While looking for females, I also found this:
It lacks the blue distal band in the caudal fin, which bintan normally do possess. Instead, it shows a reddish band near the caudal peduncle (it is much more intense and visible in reality). The bintan-forms I know (and the other ones in the tank) do not show that band when under stress. Also, it’s shape and size is different from the bintan I know, and it’s unpaired fins are much more rounded than my other paros’ fins (note the very short ventral fins!). I think this is interesting, because I have three types of bintan, and this one looks really different. I caught two similar looking females, so hopefully more will be visible soon.
Please don’t mind the cyanobacteria and the fungus on the wood, I’m aware of it and hate it! It seems I have a nice, very invasive and plant-killing strain of cyanobacteria resistant to pesticide.