Dictionary of Ichthyology  

lateral line pore = one of the series of the apertures of the lateral line canal. Usually counted from the most posterior one touching the shoulder girdle to the one wholly or mostly in front of the base of the caudal fin. Found in all fishes (except Amphioxi and perhaps some species secondarily lacking them), in amphibian larvae and adult aquatic amphibians.

Rutilus rutilus scales with lateral line pores from Wikimedia Commons: http://commons.wikimedia.org/wiki/File:RutilusRutilusScalesLateralLine.JPG

Canadian Museum of Nature