Bonjour Jeanne!
Welcome to PlanetCatfish. A good place top start is the species page for the fish here
, if you click the name of the fish it gives lots of information, including natural habitat, temperature, pH, etc. When looking to setup a species specific tank, I'll often start with the river(s) the fish is found in, this one is found in the Rio Bita, a tributary of the Rio Orinoco. Then you can start looking into details of the river, fast, slow or varied flow, black, white, or clear water, rock, sand, or leaf litter substrate, etc. Maybe a mix of many of these depending on which part of the river.
In terms of the water parameters, its a good idea to establish what your tap water is like and go from there, do you have anything to test the water with? Two good things to have are a liquid drop test, like the API master freshwater test kit, or similar, lots of companies make similar kits, that just happens to be the first which came to mind. I would also recommend a TDS meter, these are like a large pen, you should be able to find both of these things for around ~50 EUR.
Most of these catfish are fairly adaptable, so unless your tap water is an extreme pH or has a lot of nitrates, then it should do ok.
A lot of people (including me) started off chasing some magic number or type of water, and after spending a lot of time and money doing so, settle on something which is easy to maintain while also being a good environment for the fish, often local tap water.
It's worth checking with the shop or person you get the fish from, to see what water parameters they are currently kept in, that will also help you to decide.
Good luck!
