Fishes – Biology I. E. Osmoregulation 1. Chondrichthyes & Sarcopterygii • • • • • 2. Concentration of solutes in blood similar to seawater (isosmotic) or slightly higher (hyperosmotic) Retain urea and TMAO in.

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Transcript Fishes – Biology I. E. Osmoregulation 1. Chondrichthyes & Sarcopterygii • • • • • 2. Concentration of solutes in blood similar to seawater (isosmotic) or slightly higher (hyperosmotic) Retain urea and TMAO in.