Involved in oxygen transport from gills to the various peripheral tissues. Heterotetramer of two alpha chains and two beta chains. Red blood cells. This fish has ten hemoglobins, 8 of which are anodal and 2 cathodal. The cathodal tetramers do not exhibit the Bohr effect, due to lack of the C-terminal His in the beta chains and to blocking of the alpha-amino group on the N-terminal residue of the alpha chains. The possession of both anodal and cathodal hemoglobins may be a physiological advantage for fish living in fast-moving water habitats. This fish possesses 6 types of hemoglobin chains, including a major alpha chain, a minor alpha chain, two major beta chains, and two minor beta chains. Belongs to the globin family.