What fish is the brightest?

It's hard to say definitively which fish is the *brightest* because "bright" can refer to different things:

* Color: Some fish are incredibly colorful, like the clownfish, mandarin fish, or the blue tang.

* Biofluorescence: Some fish glow in the dark, like the flashlight fish or the viperfish, but they don't produce their own light.

* Bioluminescence: Some fish produce their own light, like the anglerfish and the firefly squid.

So, it depends on what you mean by "bright"!

To give you a more specific answer, I need more context. What kind of "bright" are you interested in?