The fish keeper is wrong, and every knowledgeable biologist and ichthyologist in this hobby will say so. The site I linked is owned and run by ichthyologists. If you do not agree with that data, then provide contrary data from a reputable trained biologist to prove otherwise. Since I know you cannot, don't wast your time looking.
Thank you, the website is so helpful!
From the website...
Temperature: Its natural waters lie in a humid, subtropical region where air temperatures rarely drop below 60°F/15.5°C and may be much higher in summer. For general care 16 – 24 °C is therefore recommended but it can withstand temporarily warmer conditions provided dissolved oxygen levels are maintained.
Im planning to keep my tank at 24/25 degrees c, I checked, I think the other fish that I mght be getting are also good with this temperature. I'm not getting the bumblebee catfish, but still getting the ancistrus, and the platies will also be fine in this temperature.
The current/flow may be different though, I'll keep looking