Thanks for the guidance. I currently keep the salt level around 0.1 to 0.15%, so it sounds like maintaining that level of salinity while doing small...
Yeah Sean, I noticed that on the orange one with the spot on her head, a little additional sumi has appeared around the back bone. But on the yellow...
I wonder if a koi could jump out of the water near the side and have its gill plate catch on the edge of a rock or something as it falls back in and...