Hi, sorry for the bumping this thread. But i was just wondering if that redness on your bichirs head is normal? Asking because mine have it now :/
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If you mean behind the eyes just ahead of the Gill plate. I'd say yes . Usually due to being stressed and causing the polypterus the look pale.
Is it new ? Have you tested your water ?
Sometimes in transit they stress out when ammonia rises so that would be something to conaider



