Is this flashing?

trasor

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Is this normal Lawnmower Blenny behavior? The video was posted again in the comments below due to the first upload not working.
 
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trasor

trasor

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Try again here with Chrome.
 

jelazar

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No, that's not flashing.

Flashing is when the fish starts from a few inches above the sand bed, and suddenly swims directly at the sand. The fish does a u-turn at the last second, so that it only grazes the sand with it's side.

A fish can also flash against the side of the tank, a rock, or anything else solid.
 
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