Last year I got juv marulioides but that I don't know how to count the bands. I kept them in cement tank, no filtration but change 10% water every 2-3 days. Here is pic of fish in size 8-10"
It was die by some accident.
I put some dead wood in tank too but I think not only pH or water condition develop flower. I don't sure maybe food, I fed them by small shrimp mainly.