Why do fish yawn?

  • We are currently upgrading MFK. thanks! -neo
good info @ RD , didnt really went to find out why , thanks for read up
 
Makes sense that they clean their gills after eating as the food particles often come out of their gills.
 
My Oscar once 'yawned' repeatedly and rapidly to dislodge a cricket's leg. I never knew about the backflushing. And yawns are good for territorial display, too, but is that really a yawn? And trying to dislodge a cricket leg isn't exactly an honest yawn, either. I'm happy to know what true yawns may be for. Thank you!
 
because they are bored in tiny tanks!!
 
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