The Bicolor Chub is one of several chubs here, but the only one endemic to Hawaii. While it has a lot of similarities to the Gray Chub, the two-tone coloring makes it easy to identify. Some Bicolor Chubs are dark at the back and light at the front. This one also has the dark top to its head and face. Some of them also have dark backs so that the only light part is the belly area.
Graham's Island 
Interesting colouring! I suppose they can hide easily in the darker spots!
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I don’t think they’re fish that hide, though in certain areas they might be less visible to predators.
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I am clueless when it comes to fish! 😂🐠
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I don’t know much either, but I enjoy observing them and it prompts me to find out a bit about what I’m looking at!
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That’s the way to go!
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How interesting that they have different patterns of colouring. This one looks like it’s swimming in shadows.
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The shading is quite variable. It gives then a distinctive look.
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