Is it missing plug really? They usually come with an adaptor that is easily available from any petshop/aquatic store that sells biOrbs?!
They usually have a long white/clear cable with a small metal pin plug that goes into a black square adaptor that has 2 plug ins, one for light, one for air pump
White Cloud Mountain Minnows are "common" but if you look long enough in highly stocked shop tanks and pick out a male or two and a female or two, they will look awesome with some micro crabs!
Male WCMMs have beautiful yellow/white tips to the fins that they flash as part of a display to each other over females, looks brilliant, i love these fish!
So common yet so underrated!