This Fish Has a Serious Case of the Blues

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There are a lot of brightly colored fish in the world, but lingcod, which are usually brown and white, can sometimes end up quite blue, and not just on the outside.

Hosted by: Hank Green

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Sources:
https://link.springer.com/article/10.1007/s00227-021-03936-6
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0261202

Images:
https://www.istockphoto.com/photo/the-lingcod-ophiodon-elongatus-is-a-fish-of-the-greenling-family-hexagrammidae-gm1319711678-406496817
https://www.istockphoto.com/photo/cod-fish-shows-its-fangs-gm471313779-17011315
https://link.springer.com/article/10.1007/s00227-021-03936-6/figures/1
https://www.istockphoto.com/photo/hexagrammos-lagocephalus-is-a-colorful-marine-fish-with-the-common-name-rock-gm1271429356-374018389
https://commons.wikimedia.org/wiki/File:Scorpaenichthys_marmoratus_2.jpg
https://www.flickr.com/photos/26216388@N02/8481041874
https://www.inaturalist.org/photos/77753757
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0261202
https://link.springer.com/article/10.1007/s00227-021-03936-6/figures/2
https://commons.wikimedia.org/wiki/File:8_greenlingcodwall_frierson_odfw_(8253213082).jpg
https://www.flickr.com/photos/41723647@N08/22203053910
https://link.springer.com/article/10.1007/s00227-021-03936-6/figures/1
https://www.inaturalist.org/observations/7733226
https://commons.wikimedia.org/wiki/File:Fish4002_-_Flickr_-_NOAA_Photo_Library.jpg
https://www.istockphoto.com/photo/lingcod-gm1286049923-382674154
https://www.shutterstock.com/image-photo/lingcod-plurose-anemone-puget-sound-seattle-621465755
https://commons.wikimedia.org/wiki/File:Biliverdin3.svg
https://commons.wikimedia.org/wiki/File:Heme_b.svg
https://www.inaturalist.org/observations/106910406
https://www.inaturalist.org/observations/102557201
https://www.inaturalist.org/observations/104511595
https://www.istockphoto.com/photo/lingcod-in-channel-islands-park-gm1059774706-283278529
https://www.shutterstock.com/image-photo/lingcod-resting-on-barge-off-redondo-1780935332
https://www.istockphoto.com/vector/blue-curves-and-the-waves-of-the-sea-range-from-soft-to-dark-vector-background-flat-gm1175268677-327210817