Hi.
Hao, you are totally right.
That's what we go along with here in Japan too.
Blind Bichirs (even sometimes just damaged eyed) will often turn very dark almost black.
A lot of bichirs are sold here almost black, blind, and labelled as "Super Black".
Nice to seer you around again HAO, where you been?
Sad to hear that this is commonly sold in certain areas. I guess when the hobby is as big as it is in some countries, the need for something new and unusual puts a lot of pressure on the fish farms.
I had a very horrible thought go through my head just now as I was reading Hao's question, I hope people don't start making their bichirs blind on purpose to get them to look this way.