How do they catch fish?

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Cory

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Curious how they would catch a firefish or flame angel in the sea. Or any fish! Most fish hide in rocks and when something gets close they hide!
 
No idea about in the sea, but just heard something very interesting on youtube. I believe it was BRS peeps mentioning how many fish are blind to red light. Point being, if you can just about totally black out the room and only run red leds, they can't see you or the net right in front of their face. They're as helpless to sense your trap as a green beret in a Tibetan jungle being stalked by the Predator!
 
But what about small cave dwelling fish?
 

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