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Discussion Starter #1
Hi everyone! I'm new to this site and somewhat new to fishkeeping. I just got what was sold to me as a rubbernose pleco. I'm not sure of it's scientific name. Well last night I was watching him suck algea off the back of my aquarium and noticed that he blinked! I thought I read somewhere that fish don't have eyelids? Does anyone know whether they do or not?
 

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Have you ever watched any Corydoras species? They'll blink at you.
 

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yep, i've seen plecos do it all the time. catfish do it a lot as well.
 

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they blink because there thinking " OH MY WHAT IS THAT GIANT THING LOOKING AT ME" im clueless in that aspect. but yes catfish species do ''blink'' they dont have eyelids , they actually rotate the whole eye.
 

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A lot of bottom feeders or foragers roll their eyes to protect them during feeding. I think sometimes they just do it subconsciously.

Tommy
 
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