I think the ringed humeral blotch is only a good indicator if you have other pikes from that area, since they are the only ones from their locality that have it. If its mixed in with alta, saxatilis, and lepidota though, its not a good thing to base ID off of. The location of the humeral blotch and that fact that its irregular, and completely encircled though does help out.
Crenicichla anthurus seems like the best fit for sure! Kudos to you Brian! Haha