Figure 1.

Diversity of cardiac phenotypes in the ray-finned fishes studied, mapped onto a robust phylogeny and timescale [9]. For each species, size data are provided including maximum reported body length (source: FishBase, http://www.fishbase.org/) and body length for the sampled individuals (in parentheses: mean, s.d. and n). This latter data show that the range of body sizes sampled was largely randomized across species with respect to heart colour phenotypes. We also provide ecophysiological data on primary respiration phenotype (R) (G, gill breather; Af, facultative air-breather; Ao, obligate air-breather), habitat salinity (S) (F, freshwater; M, marine; F–M, diadromy possible) and habitat thermal range (T). Habitat data were sourced from FishBase and data on air-breathing were acquired from the literature [10].