Fig. 4From: Semi-permeable species boundaries in Iberian barbels (Barbus and Luciobarbus, Cyprinidae)Maximum likelihood phylogeny of S7-1 alleles. Bootstrap and Approximate Likelihood Ratio Test support values (left/right, respectively) are given next to relevant nodes. Each rectangle represents one allele. Colors represent morphological identification of specimens following Almaça [21]Back to article page