Fair enough on the first part. I would even agree on the ropefish if Ghostknifelover is interested in some.
As for the second part, there is some overlap. Planet Catfish gives pictus catfish temperatures at 22-26 degrees (which overlaps with the 15-25 degrees given by Loaches Online to weather loaches), and the knifefish appears to overlap too (admittedly I found no 'professional' sources for this, but sites like fishkeepingworld and theaquarium guide gave 22.7-28 degrees).
So, provided all those are roughly on point, the temperature requirements of all the fish could be met at 23-25 degrees.
As for the second part, there is some overlap. Planet Catfish gives pictus catfish temperatures at 22-26 degrees (which overlaps with the 15-25 degrees given by Loaches Online to weather loaches), and the knifefish appears to overlap too (admittedly I found no 'professional' sources for this, but sites like fishkeepingworld and theaquarium guide gave 22.7-28 degrees).
So, provided all those are roughly on point, the temperature requirements of all the fish could be met at 23-25 degrees.