Blenny under blue light

Idaknow15

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Anyone else’s Bicolour Blenny have markings that show up under bluer lights?

I was really worried the first night I noticed this but he seems happy and healthy enough!

59FA70BE-45A4-425D-9928-DC30A2D29228.jpeg 41F6C408-128A-4635-A993-81B5AD2BEB0C.jpeg
 

KeepSwimming12

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Anyone else’s Bicolour Blenny have markings that show up under bluer lights?

I was really worried the first night I noticed this but he seems happy and healthy enough!

59FA70BE-45A4-425D-9928-DC30A2D29228.jpeg 41F6C408-128A-4635-A993-81B5AD2BEB0C.jpeg
I don’t have a bicolour Blenny but my Midas Blenny shifts his colour if lights change and goes straight back to yellow when white lights come on so I’d say from that you’re okay.
 

jfoahs04

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A number of different blennies do this same thing at night (or sometimes when they're frightened/stressed). It's a form of camouflage that helps them blend into the rocks. My tailspot does it every night and did it a bunch when I first got it.
 

Daniel@R2R

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That's really cool. I didn't know they did that.
 

Mattyreefs

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The first time I noticed this on my bicolor was at night after the lights were out and I shined a light on him. I thought he was sick or something before I realized it wasnm normal.
 

Hairyteeth

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I've had a bicolor, they do it when stressed or scared as said above
 

Gup

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My watchmans spots glow under blues ❤️
I just purchased a very small, baby Watchman goby. He's so small that his spots really are barely noticeable, at this point. But I am looking forward to eventually seeing same thing that you experience.


Just thought, perhaps I'll pull out my lrg magnifying glass, while he's up against the tank glass
 
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