Table 2. Summary of genetic p-distances (%) within different taxonomic levels.

	16S		cyt b		COI
comparison within	Mean p-distance	SE	Mean p-distance	SE	Mean p-distance	SE
species	0.23	0.11	0.57	0.22	0.59	0.17
genera	2.66	0.46	7.72	0.86	3.96	0.52
families	4.35	0.53	10.94	0.91	9.42	0.86
orders	10.78	0.90	16.38	1.04	13.52	1.02

Values are calculated from partial sequences of the mitochondrial 16S rRNA (16S; n = 369), cytochrome b (cyt b; n = 212), and cytochrome oxidase subunit I (COI; n = 447) genes of 50 fish species from European seas.