You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser.
Fish yawning or something else ?
My senegal bichir yawn at a certain of time I don't know if this is normal ? Secondly, why do they yawn ???
Some fish appear to yawn..but they are actually flushing their gills. There are also times that a fish will expand his mouth which looks like yawning... to show dominance!
However....It's more fun to think that they are just a little sleepy!
So its normal ?
Absolutely! Make sure you say good night to them,,,just in case!