Erratum to: Rapid sympatric ecological differentiation of crater lake cichlid fishes within historic times

The authors noted that the coding and interpretation of Figure five b and five c need corrections [1]. The lines for thin- and thick-lipped fishes' pharyngeal jaws have been reversed (see revised Figure Five b, c (Figure 1 in this article)). After correction, the results for shape differences in lower pharyngeal jaws between fish eco-morphs should instead be interpreted that thin-lipped fishes have a narrower horn, longer jaw and two smaller rear teeth. Therefore, thick-lipped fishes can be generally characterized as more molariform and thin-lipped fishes as more papilliform. These corrections affect statements in: Results page 5, paragraph Lower pharyngeal jaws; Discussion page 6, 1st paragraph. We regret the error.