A sit and wait predator during the day, the guitarfish hunts by staying hidden in the sand until it sees prey . At night, the guitarfish actively hunts prey near the seafloor 
- A ray that grows up to 1.7 m long, is a brownish grey color that blends in with the sand, and has a flat body 
- Guitarfish use their long tails to move through the water, making them resemble sharks more than other rays 
- Ranges from Northern California to the Gulf of California 
- Lives about 11-16 years 
- Mature males have large claspers proportional to their bodies and have spines. Females are mature when their shell gland and uteri are developed 
- Males mature at 8 years old and females mature at 7 years old 
- Mating occurs every summer between monogamous partners. Females carry eggs for 9-12 months before giving birth to a litter of 6-28 pups 
- Females give birth in shallow waters from June to October 
- Lives on the sandy seafloor of bays and estuaries up to 12 m deep 
- Preys on crabs, worms, small fish, and clams 
- Preyed on by large birds and mammals 
- Their generally shallow habitat makes them easy catch for fishermen, though their population is not in danger because, historically, there has not been a high demand for shovelnose meat 
- Available year-round, though from 2013-2015 landings (in lbs) in California were lowest (close to zero) from July through September, and highest in either January (2013, 2015) or November (2014) 
- Regulated and managed by NOAA Fisheries and the Pacific Management Council through the Federal Groundfish Fishery Plan; even though this species is not specifically listed it is likely incidental catch in some of the covered fisheries 
- California Department of Fish and Wildlife, as covered as an emerging fishery under CDFW Code  and the Marine Life Management Act 
- Similar groundfish species are caught with traps, hooks, and lines; even though this species is not specifically listed it is likely caught with similar gear 
Status of the fishery
- Species may be vulnerable to overfishing because long-lived, taking a long time to reach maturity and reproduce, and pregnant females in some regions swim in shallow water where they are easy to catch 
- Population is decreasing and is near threatened 
- No catch limit regulations or conservation efforts are in place 
Potential ecosystem impacts
- As with other fish, the guitarfish plays a role in the ecosystem as predator and prey, so drastic declines could dramatically affect the ecosystem [4, 3]
- Trunk, tail, and loin areas of the fish are generally used 
Description of meat
- Meat is often served fried and buttery, but can also be thick like steak [6,9]
- Usually called “shark steak” or sold in “fish n’ chips” in Santa Barbara. Dried guitarfish also sold as curios 
- Common recipes for the shovelnose guitarfish could not be found, but it can be cooked using recipes for rays and skates (See reference  for a recipe for skate meunière with caper butter).
- Nutritional info for shovelnose guitarfish could not be found; shown is Skate Wing [9,13]
- No known toxins or dietary warnings/guidelines currently exist.
- Typically available year round, with some variation depending on the year 
 Farrugia, T.J., Márquez-Farías, F., Freedman, R.M., Lowe, C.G, Smith, W.D. & Bizzarro, J.J. 2016. Pseudobatos productus. The IUCN Red List of Threatened Species 2016. Web. http://dx.doi.org/10.2305/IUCN.UK.2016-3.RLTS.T60171A104004394.en. Accessed: 29 May 2017.
 Keeley, F. 1999. Marine Life Management Act. AB 1241. California Department of Fish and Wildlife, Sacramento, California, United States.
 Márquez-Farías, F. 2007. Reproductive biology of shovelnose guitarfish Rhinobatos productus from the eastern GC Mexico. Marine Biology 151: 1445-1454.
 Navarro, R., C. Victoria. 2012. Animal Diversity Web: Rhinobatos productus. Web. http://animaldiversity.org/accounts/Rhinobatos_productus/. Accessed: 29 May 2017.
 NOAA Fisheries, West Coast Region: About Groundfish Fisheries. Web. http://www.westcoast.fisheries.noaa.gov/fisheries/groundfish/. Accessed: 29 May 2017.
 Timmons, M., R. Bray. 1997. Age, growth, and sexual maturity of shovelnose guitarfish, Rhinobatos productus. Fishery Bulletin, 95: 349-359.
 California Department of Fish and Wildlife 2016-2017. Final California Commercial Landings. Web. https://www.wildlife.ca.gov/Fishing/Commercial/Landings. Accessed: 29 May 2017.
 2017. Check Your Food: Skate Meuniere with caper butter. Web. https://www.checkyourfood.com/Meals/Meal/364/Skate-meuni%C3%A8re-with-caper-butter-. Accessed: 29 May 2017.
 2017. Check Your Food: Skate Wing. Web. https://www.checkyourfood.com/ingredients/open/986/skate-wing. Accessed: 29 May 2017.
 Justia. 2017. 2005 California Fish and Game Code Sections 7090. Web. http://law.justia.com/codes/california/2005/fgc/7090.html. Accessed: 29 May 2017.
 Monterey Bay Aquarium. 2017. Shovelnose guitarfish. Web. https://www.montereybayaquarium.org/animal-guide/fishes/shovelnose-guitarfish. Accessed: 29 May 2017.
 2017. Tuna Harbor Dockside Market Species. Web. http://thdocksidemarket.com/new/#species. Accessed: 29 May 2017.
 Guitarfish,Web. Myfitnesspal.com. Accessed: 21 September 2017.