Nope. Not a syn.
My first question would be is how large is this fish? If its still quite juvi it could still be changing. I think it looks like a blackbelt aka vieja maculacada. But very young. I've got 2 blackbelts one about 3.5 to 4 inches the other only about 2 to 3 inches. The smaller one looks like that sometimes depending on its mood. Its starting to make the changes to what it should look like. It could very well be a full on bb. It might be a hybrid. Either way I think your going to end up with a beautiful fish.
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