Join Mason Young and Museum scientist Chrissy Williams as they dive into the surprising science behind fish mouths and what we can learn from our collections.

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   • Do fish yawn? | Surprising Science  

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0:00 Mason meets Chrissy and we find out that fish don't yawn but open their mouths for very different reasons.
0:39 We find out how a gulper eel has adapted to feed in the deepest of waters by having an expandable jaw.
1:40 We discover how female Cichlids use their mouths to safeguard the fertilised eggs of their young.
2:20 Sarcastic fringeheads, yes that's right, it's a type of blenny. This fish will expand its jaw to frighten off other fish.
3:21 Chrissy tells us about her favourite fish, which is a salmon. Salmon have a mouth adaptation during spawning season where they develop a mouth hook called a kype.
4:26 Chrissy explains why fish do have their mouths open.