Catalina Blue Perch – Medialuna californiensis. Common names: Catalina blue perch, half moon perch (due to the tail fin shape resembling a crescent moon), blue bass, black perch, blue perch, blue wizard.
Identifying Characteristics and Biology
- The name ‘half moon’ or ‘halfmoon’ comes from its unique tail fin shape resembling a crescent shaped moon.
- Catalina blue perch color is steel- or slate-blue to blue backs, and silver and gray bellies.
- Adult fish can reach to almost 20 inches, although they mature at around 7 inches.
- Catalina blue perch feed on seaweed and small invertebrates.
Range and Habitat
- Typical range: from Vancouver Island to the Gulf of California, from the surface to about 130 feet deep.
- Catalina blue perch like shallow rocky areas, and are fond of kelp beds, and anywhere there is seaweed growing.
- This fish can be found under kelp patties many miles offshore
- Catalina blue perch are great eating fish.
Love, Milton. Probably More Than You Want to Know About the Fishes of the Pacific Coast. Santa Barbara: Really Big Press, 1996. Print.
“Marine Sportfish Identification: Other Fishes.” Marine Sportfish Identification: Other Fishes. CA Department Fish and Wildlife, 17 Oct. 2013. Web. 20 Feb. 2014.