Sturisoma/Rineloricaria/Farlowella

[Nativeguy]

Hi all!
I currently have a female farlowella (presumed vittata) and I am hoping to get a mate pretty soon. My tank is a 26 gallon bowfront with a school of 9 cherry barbs and an african butterfly fish. My question is, my lfs occasionally has a species of sturisoma/rineloricaria that I have not taken time to id yet as I do not have photos. Would it be ok to add a pair to my current setup? Or should I set up a 20 long on my rack for breeding? Would a 20 long be too small? If you need to know the species to answer these questions then I will try to find out this weekend.
Thanks,
Cole

[Mol_PMB]

My Farlowellas like to sucker to the glass vertically, or rest on angled branches. Adults are 8-9" long. In a tall tank it's fine but the adults don't like tanks where the water depth isn't much more than their own length.
The tank doesn't need to be more than 2' long but it should be 18" deep or more. In a shallower tank I had one jump out when startled, and another just hid in the back corner.

Juveniles are fine in a shallower tank.

[Nativeguy]

Then I will plan on keeping them in the 26. Do you think a pair of sturisoma would be too much bioload in addition to the current stocking?