The Luwuk population is
therefore isolated from the populations inhabiting the Banggai
Archipelago. The closest population is localized in Patikaman (south-
central Peleng) at about 120 km, and separated by the Peleng Strait with
strong currents and depths up to about 920 m (Vagelli, 2005). Because of
its isolation, and the fact that Luwuk harbor was used by fish collectors
as a distribution center during the first years of the P. kauderni trade, the
Luwuk population has been proposed to be the result of an artificial
introduction, yet no direct evidence is available.