Damselfishes: Family Pomacentridae
Species: Chromis punctipinnis (Cooper, 1863); from the Greek word chromis (a croaker) and the Latin words punctipinnis (spot fin).
Alternate Names: Blue perch, kelp perch, rock bass and black perch. In Mexico called castañeta herrera.
Identification: Perch-shaped but not so deep—compressed and somewhat elongate. Their dorsal fin is long and undivided. Their coloring is dark blue or black on the back, grayish blue on sides, yellow tones in fins; they have black spots on the posterior half of the body.
Size: Length to 12 inches; most caught off piers are 6-10 inches.
Range: Punta San Pablo, central Baja California, to Monterey Bay. Common in southern California.
Habitat: Shallow-water, rocky-shore areas and in kelp beds; young and adults aggregate according to size. Surface to 150 feet deep although may travel down to 300 feet.
Piers: Generally found only at southern California piers, and then only those located close to extensive kelp or reefs (although I have seen a few blacksmith landed at Monterey Wharf #2). Best bets: Oceanside Harbor Pier, Green Pleasure Pier and Cabrillo Mole (Avalon), Redondo Harbor Sportfishing Pier, Paradise Cove Pier, Goleta Pier and Gaviota Pier.
Shoreline: A common catch by rocky shore anglers in southern California.
Boats: An inshore species rarely taken from boats.
Bait and Tackle: Size 6 to 8 hooks fished on the bottom to mid-depth. Best bait are live bloodworms, lug worms, live crabs, fresh mussels or small pieces of shrimp.
Food Value: Too small, let ’em go.
Comments: Really only common at a few piers although I have seen them caught at many piers. It is reported that young blacksmith seek out cleaning fish, usually juvenile pileperch or senorita, and place themselves in positions where the cleaning fish are almost forced to remove external parasites from them. During these actions, the blacksmith may be head up, head down, on their side or even upside down. If the cleaner tries to leave, blacksmiths follow and prevent escape. Talk about bad manners.