The blacksmith (Chromis punctipinnis) is a fish native to the eastern Pacific Ocean. Its range is from Monterey Bay, California, to central Baja California, Mexico. This is a small, reef-associated marine fish.
The blacksmith can reach 30 centimeters (12 inches) in length. It is blue-black in color with small black spots towards the tail. The scales are large. The tail is forked. The juvenile (to 5 centimeters) is two-toned with a blue-grey front and a brownish-orange rear.
The fish lives at depths up to 46 meters, usually close to the sea floor, over rocks, or on slopes. It also inhabits kelp forests.
The blacksmith rests in rocky crevices during the night. It is known to be territorial, and, although small, it acts aggressively toward other fish. Juveniles are pelagic and form schools. The blacksmith is symbiotic with the señorita. When it feels that it is starting to deteriorate in hygiene it will turn until it is perpendicular to the ground, allowing the señorita to clean it.
The blacksmith spawns during summer and autumn. The male cleans a nesting site, then herds a female to it. After spawning, the male guards the eggs until they hatch.