FIG. 3.

The tail fin morphology changes from a simple fin fold to a rayed fin. (A) Tail fin phenotype 1 (B) tail fin phenotype 2 (C) tail fin phenotype 3 (D) tail fin phenotype 4 (E) tail fin phenotype 5. (F) The distribution of tail fin phenotypes 1–5 by SL. (G) Close up of tail fin phenotype 2. (H) Close up of tail fin phenotype 3. (I) Close up of tail fin phenotype 4. (J) Close up of tail fin phenotype 5. Arrowheads indicate forking points of fin rays. Color images available online at www.liebertpub.com/zeb