Bacteria can infect fish both externally and internally. Which is the most likely point of entry of bacteria that will cause an internal infection?
A)gills
B)skin along the dorsal side of the fish
C)skin along the ventral side of the fish
D)tail
E)fins

Question

Quizplus · Accepted Answer

The gills are the primary site of gas exchange in fish and are also a common point of entry for bacteria. Bacteria can enter the fish's bloodstream through the gills and infect internal organs such as the liver, kidney, and spleen.

Bacteria Can Infect Fish Both Externally and Internally