Like us, fish need oxygen, and swimming through a patch of carbon dioxide turns out not to be a pleasant experience. Instead, they prefer to avoid carbon dioxide altogether. In experiments published in Cell Reports on Jan. 30, researchers at the RIKEN Brain Science Institute in Japan have discovered a neuronal pathway that makes this behavior possible.

This video shows that a 14 day post fertilization zebrafish larva has no problem swimming past TCA.

Reference:
Koide T, Yabuki Y, Yoshihara Y (2018) Terminal nerve GnRH3 neurons mediate slow avoidance of carbon dioxide in larval zebrafish. Cell Reports. doi: [ Ссылка ]

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