The Philippine guitarfish, known formally as Rhinobatos whitei, is a critically endangered species of cartilaginous fish in the genus Rhinobatos.[2][3][4] The species has been documented in the Pacific Ocean near the Philippines.[5] The documented sizes of Philippine guitarfish specimens ranges between 556-720 mm for male adults and female adults exceeding 720 mm. [6] The observed characteristics of the guitarfish is the difference of morphological features, coloration, pelvic and caudal features [7]. The observation of the species is rather rare due to the lack of sightings, capturing of the species, or mixing the taxonomic features with other species of guitarfish. [8]
| Philippine guitarfish | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Chondrichthyes |
| Subclass: | Elasmobranchii |
| Order: | Rhinopristiformes |
| Family: | Rhinobatidae |
| Genus: | Rhinobatos |
| Species: | R. whitei
|
| Binomial name | |
| Rhinobatos whitei (Corrigan & Naylor, 2014)
| |
Morphological Features
Disc shape: The observed shape of given specimens were broadly wedge-shaped with a blunt anterior and mildly bottlenose shape, differing from other species of its form. [9]
Tail Structure: The tail is observed to be elongated and slender, observed to be thicker and proximally to the body and becomes more slender distally. [10]
Coloration
Blotches and spots: Rusty brown blotches with faint white spots. [11]
Pelvic and Caudal Features
Pelvic Rays and Radials: Observed pelvic rays is 24-26
Caudal Centra Count: Observed caudal centra 43-48, relatively higher than other observed specimens within the species.
References
edit- ^ Dulvy, N.K.; Derrick, D.; Rigby, C.L.; Tanay, D.; Utzurrum, J.A.T. (2021). "Rhinobatos whitei". IUCN Red List of Threatened Species. 2021: e.T104007203A104007215. doi:10.2305/IUCN.UK.2021-2.RLTS.T104007203A104007215.en. Retrieved 29 August 2024.
- ^ "Philippine Guitarfish (Rhinobatos whitei)". iNaturalist. Retrieved 2024-08-29.
- ^ Bailly, Nicolas (2017). "Rhinobatos whitei Last, Corrigan & Naylor, 2014". WoRMS. World Register of Marine Species. Retrieved 2024-08-29.
- ^ "Rhinobatos". Global Biodiversity Information Facility. Retrieved 2024-08-29.
- ^ Froese, Rainer; Pauly, Daniel (eds.). "Rhinobatos whitei". FishBase. August 2024 version.
- ^ Last, Peter R.; Corrigan, Shannon; Naylor, Gavin (2014-10-07). "Rhinobatos whitei, a new shovelnose ray (Batoidea: Rhinobatidae) from the Philippine Archipelago". Zootaxa. 3872 (1). doi:10.11646/zootaxa.3872.1.3. ISSN 1175-5334.
- ^ Last, Peter R.; Corrigan, Shannon; Naylor, Gavin (2014-10-07). "Rhinobatos whitei, a new shovelnose ray (Batoidea: Rhinobatidae) from the Philippine Archipelago". Zootaxa. 3872 (1): 31. doi:10.11646/zootaxa.3872.1.3. ISSN 1175-5334.
- ^ Moore, Abm (2017-07-21). "Are guitarfishes the next sawfishes? Extinction risk and an urgent call for conservation action". Endangered Species Research. 34: 75–88. doi:10.3354/esr00830. ISSN 1863-5407.
- ^ Last, Peter R.; Corrigan, Shannon; Naylor, Gavin (2014-10-07). "Rhinobatos whitei, a new shovelnose ray (Batoidea: Rhinobatidae) from the Philippine Archipelago". Zootaxa. 3872 (1): 31. doi:10.11646/zootaxa.3872.1.3. ISSN 1175-5334.
- ^ Last, Peter R.; Corrigan, Shannon; Naylor, Gavin (2014-10-07). "Rhinobatos whitei, a new shovelnose ray (Batoidea: Rhinobatidae) from the Philippine Archipelago". Zootaxa. 3872 (1). doi:10.11646/zootaxa.3872.1.3. ISSN 1175-5334.
- ^ Last, Peter R.; Corrigan, Shannon; Naylor, Gavin (2014-10-07). "Rhinobatos whitei, a new shovelnose ray (Batoidea: Rhinobatidae) from the Philippine Archipelago". Zootaxa. 3872 (1). doi:10.11646/zootaxa.3872.1.3. ISSN 1175-5334.
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