Fish Hemoglobin, O2 and CO2 Transport
Apart from the special case of the channichthyid icefishes, most oxygen in the blood is carried by red cell hemoglobin,...
BioBlogs
Blood of Fishes
Different fishes have very different lifestyles, so it is not surprising that the properties of their blood vary according to...
Accessory Pumps in Fishes
A remarkable variety of accessory pumps occurs in the venous circulation of different fishes. These range from the portal heart...
The Hearts of Fishes
Fish hearts are S-shaped and four-chambered with, from behind forwards, sinus venosus, atrium, ventricle and either a bulbus or conus...
Circulation in Fishes: Primary and Secondary
The oxygen acquired (from water or air), and the carbon dioxide excreted at the gills, have to be transported around...
Respiration of Fish Larva
The Origin of Respiratory Gills In ascidian and doliolid tunicates, and in amphioxus, the gills are ciliated food collecting devices,...
Respiration in Hagfish and Lampreys
Hagfish In hagfishes, unidirectional water flow through the serial muscular gill pouches is chiefly brought about by rolling and unrolling...
Origin of Freshwater Fishes
The variety of freshwater fishes is striking, for they show radiations into different habitats with some of the most extraordinary...
Freshwater Fishes: Diversity
Diversity of Freshwater Fishes Despite representing only a miniscule (0.0093% according to Horn, 1972) part of the world’s aquatic habitat,...
Marine Fishes: The Open Ocean
Epipelagic Fishes The open ocean beyond the continental shelf covers nearly two-thirds of the surface of the Earth, and some...
Introduction to Coecalanth
The living Latimeria chalumnae was first identified off Southern Africa in 1938, and was known from some 200 further specimens...
Introduction to Holostei & Teleostei
Holostei Even fewer holosteans than chondrosteans survive today. The bowfin (Amia) of rivers in eastern North America, and seven species...
