Figure 3From: The complete mitochondrial genome of a basal teleost, the Asian arowana (Scleropages formosus, Osteoglossidae)Nucleotide usage frequency of three osteoglossids compared to that of the bichir. Frequency of nucleotide usage according to codon position for all protein-coding genes. Order of bars from the left: Asian arowana (), silver arowana (), butterfly fish () and bichir ().Back to article page