Shovelnose Guitarfish
The shovelnose guitarfish is a bottom-dwelling species found along the Pacific coast of North America. Though technically a type of ray, its body uniquely combines features of both sharks and rays, giving it a distinct appearance.
Found in shallow, coastal waters from central California to the Gulf of Mexico, the shovelnose guitarfish inhabits bays, sloughs, and estuaries, typically settling on soft sandy or muddy bottoms. Its body sports the typical wing-like pectoral fins of all rays, but otherwise its shape closely resembles a shark’s. Its gray black coloration helps it blend in with the sand and hide itself from predators above.
These guitarfish may also bury themselves in sediment on the seafloor as additional camouflage. As bottom-dwelling predators, the shovelnose guitarfish feeds on crabs, clams, small fish, and other species that tend to dwell on the seafloor. While adult shovelnose guitarfish have few natural predators, juveniles may be hunted by animals such as California sea lions, ospreys, and great blue herons.
While not currently listed as endangered, shovelnose guitarfish face several threats from human activity. Across its range, the species has declined by nearly 30% over the past three generations (27 years). The shovelnose guitarfish is listed as near threatened globally on the IUCN Red List.
Overfishing and bycatch
These rays may be caught by artisanal fishers or taken accidentally by trawlers or gillnets in Mexican waters.
Habitat Loss
They also suffer habitat loss and modification, as estuaries they feed and reproduce in are being destroyed or modified.
Oceana is continuing to work around the world to mitigate the effects of overfishing and increase the number of fisheries with management plans and catch limits. Our campaigns also focus on protecting important seafloor habitat for wildlife like shovelnose guitarfish. We have already helped protect more than 4 million miles of ocean habitats, and we continue to work with our allies towards the global goal of protecting 30% of ocean habitat by 2030.
- IUCN Red List
- Animal Diversity Web
- Farrugia TJ, Espinoza M, and Lowe CG. (2011) Abundance, habitat use and movement patterns of the shovelnose guitarfish (Rhinobatos productus) in a restored southern California estuary. Marine and Freshwater Research 62: 648-657. https://www.publish.csiro.au/mf/pdf/MF10173
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