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Rhinobatos productus  Ayres, 1854

Shovelnose guitarfish
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| Native range | All suitable habitat | PointMap | Year 2100 |
This map was computer-generated and has not yet been reviewed.
Rhinobatos productus   AquaMaps   Data sources: GBIF OBIS
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Image of Rhinobatos productus (Shovelnose guitarfish)
Rhinobatos productus
Picture by Murch, A.

Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (sharks and rays) > Rajiformes (Skates and rays) > Rhinobatidae (Guitarfishes) > Rhinobatinae
Etymology: Rhinobatos: Greek, rhinos = nose + Greek, batis, -idos = a ray (Raja sp.) (Ref. 45335).

Environment / Climate / Range Ecology

Marine; brackish; demersal; depth range 1 - 91 m (Ref. 48844), usually 1 - 13 m (Ref. 48844).   Tropical; 38°N - 16°N

Length at first maturity / Size / Weight / Age

Maturity: Lm ?, range 99 - ? cm
Max length : 119 cm TL male/unsexed; (Ref. 48844); 170.0 cm TL (female); max. published weight: 9.8 kg (Ref. 40637); max. published weight: 9.8 kg; max. reported age: 16 years (Ref. 48844)

Short description Morphology | Morphometrics

Broad disc is greater in length than width; a relatively smooth dorsal surface except for a single row of thorns around the eyes and extending along the back and tail; a long, pointed snout with a rounded tip; small, rounded, pebble-like teeth; a first dorsal fin that originates closer to the pelvic fin base than to the caudal fin origin; a thick tail and a moderately large caudal fin without a distinct lower lobe. Tooth count: 102-112/98-117. Spiral valve count: 8-10.

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Eastern Pacific: endemic to the eastern Pacific from San Francisco, USA to the Gulf of California, and possibly to Mazatlan, Mexico (Ref. 48844).

Biology     Glossary (e.g. epibenthic)

Found on sand or mud bottoms of bays, seagrass beds, estuaries, and near rocky reefs. Nomadic and gregarious. Found singly or in aggregations (Ref. 12951). Burrows in sand during the day, feeds on crabs, worms, clams and small fishes at night (Ref. 12951). Ovoviviparous, with 6 to 28 pups in a litter (Ref. 48844). Etymology: The genus comes from the Greek word rhine, meaning shark, and the Latin word batis, meaning ray, in reference to its body form being intermediate between that of a shark and a ray. The species name comes Latin, meaning produced, in reference to its pointed snout (Ref. 48844).

Main reference Upload your references | References | Coordinator : McEachran, John | Collaborators

Eschmeyer, W.N., E.S. Herald and H. Hammann, 1983. A field guide to Pacific coast fishes of North America. Houghton Mifflin Company, Boston, U.S.A. 336 p. (Ref. 2850)

IUCN Red List Status (Ref. 90363)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless (Ref. 2850)




Human uses

Fisheries: commercial; gamefish: yes
FAO(Publication : search) | FisheriesWiki | Sea Around Us

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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Trophic Level (Ref. 69278):  3.6   ±0.6 se; Based on diet studies.
Resilience (Ref. 69278):  Low, minimum population doubling time 4.5 - 14 years (tm=7; tmax=11; K=0.1; Fec = 6).
Vulnerability (Ref. 59153):  Very high vulnerability (77 of 100) .
Price category (Ref. 80766):   Low.