Elasmobranchii (sharks and rays) > Rhinopristiformes
(Shovelnose rays) > Rhinobatidae
(Guitarfishes) > Platyrhininae
Etymology: schoenleinii: Needs a better reference.
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range ? - 100 m (Ref. 27000), usually 10 - 15 m (Ref. 114953). Tropical; 31°N - 18°S, 19°W - 14°E (Ref. 114953)
Eastern Central Atlantic: Morocco to Angola.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 100.0 cm TL male/unsexed; (Ref. 6513); common length : 50.0 cm TL male/unsexed; (Ref. 114953); max. published weight: 1.4 kg (Ref. 114953)
Occurs in shallow coastal waters to moderate depth, over sandy and sandy-muddy bottoms. Feeds on mollusks and other benthic invertebrates, mainly shrimps (Ref. 6513, 114953). Ovoviviparous (Ref. 5377). Females mature at 37-40 cm TL, males ca. 30 cm TL. Litters of 1-4 pups after short gestation; born at ca. 19 cm TL (Ref. 114953).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialised structures (Ref. 50449).
Stehmann, M., 1990. Platyrhinidae. p. 28. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 1. (Ref. 6513)
IUCN Red List Status (Ref. 119314)
CITES (Ref. 115941)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Preferred temperature (Ref. 115969
): 15.6 - 20.9, mean 19.2 (based on 19 cells).
Phylogenetic diversity index (Ref. 82805
= 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm Total Length, based on all LWR estimates for this body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.6 ±0.44 se; Based on food items.
Resilience (Ref. 69278
): Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be <100).
Vulnerability (Ref. 59153
): Moderate to high vulnerability (51 of 100) .