yeah, that is the case with many gar species...and many fish species in general. clearer water tends to have more vividly-patterned fishes, more turbid waters less so. there is less need for camouflage when one can't see through the water. we have seen many examples of this with gars - if you look at the spotted gars from two populations gar quiz you can see a great example...of course, the gar quiz is buried somewhere in the stickies