Fig. 6. Evolutionary transitions of pattern motifs in major fish orders.

(A) Schematic example of the pattern motif transitions. The genus-level portfolio of pattern motifs is depicted in rounded rectangles (the presence/absence of the three motifs is shown here). Eight possible transitions between “without Maze” (left) and “with Maze” (right) under the dependent model are indicated by arrows. (B and C) Transition rates estimated using Bayesian reversible-jump Markov chain Monte Carlo (rjMCMC) approach implemented in BayesTraits (30). (B) Maze gain rate. The rates of transition from “without Maze” to “with Maze” [arrows a to d in (A)]. (C) Maze loss rate [arrows e to h in (A)].