I though they reminded me of those Tapajos red heads Rapps brought in a few years ago, except blue instead of green. I thought perhaps it might be a racial version of that fish, but the only reference of the Rio Maica I can find wouldn't drain into the Tapajos drainage, but the Mamore one. Though, if it's found in the Mamore, it might also be found in the Guapore river which I believe floods into the Tapajos basin via the Juruena much like the Negro floods into the Orinoco basin up north.
