Figure 3

The best-scoring maximum-likelihood (ML) tree of the 66 otophysan and 44 outgroup species based on unambiguously aligned whole mitogenome sequences (12 _n RT _n data set; 9923 positions). Numerals beside internal branches indicate bootstrap probabilities (BSPs) of ≥50% based on 1000 replicates. Thick lines indicate those internal branches with 100% BSPs. Suprafamilial clades in Siluriformes reported by Sullivan et al. [21] are denoted as follows (abbreviations in parentheses): "Big Asia", "Claroidea" (Cla), "Aspredinidae + Doradoidea" (Asp + Dor), "Ictaluroidea" (Ict), and "Big Africa".