Jim, after having watched that video 3 times it would appear to me that your fish has a swim bladder disorder and is struggling to maintain a level swimming motion. Back in the 80's I wrote an article for FAMA magazine dealing with swim bladder disorders in fancy goldfish. After consulting with Dr ...

If imported from the UK it's likely they were from NHA who do the genuine breeding of granulosus. They should have rear finnage that is white but not the leading edge - see the f1 photos in cat-e-log for comparison (photo 15 & 16)

I just had communication with Trin and also with importer. He ...

FWIW - I personally know these were imported (25 of them) from a breeder in the UK. Trin acquired 6 I believe.

Long Barbels