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For your information: they’re from the same batch as these: https://www.parosphromenus-project.org/fr/forum-2/9-Trade/1464-p-sumatranus-mixed-with-bintan-in-nederland.html?start=12
https://www.parosphromenus-project.org/fr/forum-2/26-Pictures/1509-p-sumatranus-probably.html https://www.youtube.com/watch?v=GjU75Vgrr8s
The fish in question strongly resemble this one: http://www.igl-home.de/forum/gallery/image_page.php?album_id=7&image_id=186&sk=t&sd=d&st=0
At least the one in the third picture seems to be real sumatranus. You can even see the red band in it’s dorsal fin. They’re from the same batch as mine, which undoubtedly are the real deal.
My sumatranus didn’t have the filament in the beginning, and even now it’s not always clearly visible in all indivuals. Some even seem to lack it completely. Their courtship dance is head up, so they really are sumatranus.I don’t yet exclude the possibility of them being sumatranus. Wait until they show their true colour.
Why don’t you just get yourself some Gammarus or Asellus? Both are abundant in ditches, lakes and rivers throughout the Netherlands, and very easy to breed.
Ice? Snow? It’s been almost 30C here the past few days!
My biggest concern with keeping fish outside is how to prevent them from overheating, while keeping them warm. It might be too cold in the shadow, but it will certainly get too hot in direct sunlight.I don’t know how the climate is where you live, but our Dutch weather changes it’s mind every few moments. It might be a nice temperature today, but tomorrow night it could be freezing, so to speak. Even in mid-summer, the temperature swings like it’s drunk.
A fish of tropical origin will probably dislike such changes. Paros don’t need high temperature (I don’t use heaters), but I think they like it to be constant.
You could give it a try, however, if you have sufficient numbers of fish.
To my experience, hornwort will drop it’s leaves when held too dark, or otherwise suboptimal. I really dislike the plant for it’s incredible polluting capacity.
The reason nobody responded is probably due to the fact it is yet another picture proving nothing except it is indeed a paro. To be honest, I can understand why people give up on telling the same story (“wait for them to show colour/we need better pics/probably a bintan-form”) everytime.
When you have a question, it often saves a lot of time to look through older threads. You’re not the first one with a paro, so you’re probably also not the first one with a question considering determination. Not rarely, your question has been answered before.
In conclusion:
Determination is impossible from these pictures. All I can do is wish you luck in keeping and breeding, and welcome to the project!Increase in conductivity isn’t directly a bad thing. For instance, NaCL will vastly increase conductivity, whilst being beneficial in low amounts.
It actually works very well, especially when sensitive fish are involved. I prefer keeping my harder-to-keep fish in this kind of tanks.
If nothing grows under a walnut, it problably means the leaves contain high doses of tannins and other acidifying agents, like oak and beech. It’s probably a good species for use in paro tanks then. I would at least try it.
Ruinemans’ pictures are seldom of the actual fish, they just fetch one from their archives. It would surprise me if it really is the fish shown, but you never know…
Ruinemans’ nagyi generally is nagyi, deissneri and most others are a kind of bintan, sometimes mixed with other types. Also linkei is listed well when they have them.
