Blood without the redSourced
Antarctic icefish have colourless blood
Crocodile icefish inhabit seas around Antarctica. As adults they lack haemoglobin, the oxygen-binding protein that gives blood its red colour. Their blood is consequently colourless.
Even the colour of a fish’s blood can defy an ordinary expectation.
Summary / translation: Unbubly · CC BY-SA 4.0
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Channichthyidae · Wikimedia contributors
Adapted, summarized and translated from the source. Adapted text is also available under CC BY-SA 4.0.
Reviewed: 2026-10-10