Elasmobranchii (sharks and rays) > Rhinopristiformes
(Shovelnose rays) > Rhinidae
Etymology: Rhynchobatus: Greek, rhingchos = snout + Greek, batis, -idos = a sting ray (Raja sp.) (Ref. 45335); palpebratus: Name from Latin 'palpebra' meaning eyelid, refers to the dark, eyebrow-like marking on the supraorbital membrane. More on authors: Compagno & Last.
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range 5 - 61 m (Ref. 76954). Tropical; 5°S - 23°S, 113°E - 154°E (Ref. 114953)
Indo-West Pacific: Eastern Indian Ocean and South-West Pacific; northern Australia and Papua New Guinea (Ref. 114953).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 262 cm TL male/unsexed; (Ref. 114953)
A poorly known benthic species that occurs in shallow water on the continental shelf. Presumably feeds on bottom-dwelling fishes and crustaceans. Males sexually mature at 103 cm TL (Ref. 114953).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Compagno, L.J.V. and P.R. Last, 2008. A new species of wedgefish, Rhynchobatus palpebratus sp. Nov., (Rhynchobatoidei: Rynchobatidae), from the Indo-West Pacific. In Last, P.R., White, W.T. & Pogonoski, J.J. (eds.): Descriptions of New Australian Chondrichthyans. CSIRO Marine and Atmospheric Research Paper no. 22. (Ref. 76954)
IUCN Red List Status (Ref. 123251)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 24.6 - 28.8, mean 27.6 °C (based on 504 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5049 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00363 (0.00161 - 0.00818), b=3.11 (2.91 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.6 ±0.6 se; based on size and trophs of closest relatives
Vulnerability (Ref. 59153
): High to very high vulnerability (74 of 100) .