Could be scratching, beginning stages of Ich. Fish often begin scratching before visual symptoms occurr (white spots). In my experience with bichirs the scratching is more of a thrashing.
Just do a little larger water changes than normally and raise the temperature a couple degrees, to be safe, surely doesn't sound like anything serious.
Just do a little larger water changes than normally and raise the temperature a couple degrees, to be safe, surely doesn't sound like anything serious.