Can anyone tell me the differences between the endlicheri bichirs found in the Chad basin and Volta river? I have both, but they look almost the same. The Chad has more brown color and darker bands, while the Volta has more of a grey color and has a longer, leaner body. The Chad has a tall, thick body. Are these just different characteristics of two of the same fish or are they really different because of where they originate? Pictures would help.