Tropical Fish Forums
Aquarium fishkeeping around the world!
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Caton
Regulars
Joined: 28 Jul 2009
Location: Washington State, USA
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 Posted: 2010.10.31(Sun)6:29 Post subject: Do fish blink? |
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My cousin asked me if fish blink or if there any kind of fish that blink...I think sharks (e.g. great whites) blink
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UncleWillie
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Joined: 26 Nov 2007
Location: Georgia, USA
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| Posted: 2010.10.31(Sun)10:04 Post subject: |
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Sharks are the exception. Nearly all fish cannot/do not "blink" because they do not possess eyelids (there is no need to hydrate eyes  ). Most sharks can cover the eye with an upper and lower membrane that mostly acts as a protective layer while catching/fighting prey. I think a few sharks lack this membrane though.
Other fish (mudskippers come to mind) already have a protective membrane covering the eye at all times to keep their eyes moist while out of water. They can roll their eyes around in sockets, but never "blink". Hope this helps. |
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Caton
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Joined: 28 Jul 2009
Location: Washington State, USA
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| Posted: 2010.10.31(Sun)11:57 Post subject: |
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| Thanks a lot Uncle Willie! My eight year old cousin thanks you. |
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Fern
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Joined: 26 May 2009
Location: SW Florida
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| Posted: 2010.11.02(Tue)11:25 Post subject: |
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Corys can look like they blink, I believe they do it when they swallow or something...... Been quite some time since I looked it up 
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keithkyli
Members
Joined: 27 Apr 2010
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| Posted: 2010.11.09(Tue)8:52 Post subject: |
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| Fern wrote: | | Corys can look like they blink, I believe they do it when they swallow or something...... Been quite some time since I looked it up |
Their "blink" is actually looking down onto the substrate. It's really cute and comedic.
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mohammad.j.ideis
Members
Joined: 25 Nov 2010
Location: chicago
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| Posted: 2010.11.25(Thu)23:17 Post subject: |
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actually bottom feeders roll their eyes down but the ydont blink u heve 2 stare at their eyes 4 1-2 min aprox  |
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katienaha
Regulars
Joined: 18 Dec 2009
Location: British Columbia, Canada
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| Posted: 2010.11.26(Fri)0:34 Post subject: |
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| mohammad.j.ideis wrote: | | actually bottom feeders roll their eyes down but the ydont blink u heve 2 stare at their eyes 4 1-2 min aprox |
For the non-native-english speakers out there, he said "you have to stare at their eyes for 1-2 minutes approximately".
Please do try to type better, it is actually a forum guideline. If you read first, you would have seen it.
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