Final answer:
The words that should be followed by a comma, including the Oxford comma, are 'Anglerfish' and 'flashlight fish' in the given sentence.
Step-by-step explanation:
The two words that should be followed by a comma, including the Oxford comma, in the given sentence are Anglerfish and flashlight fish. The Oxford comma is used to separate items in a list to avoid ambiguity. In this case, the sentence lists three types of fish: anglerfish, flashlight fish, and lanternfish. The Oxford comma is placed after the second item, which is 'flashlight fish', before the conjunction 'and'.
Learn more about Oxford comma