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NarrativeWikipediaarticle
Traits & measurements1 literature sources7 traits
Occurrence & distributionGBIF · OBIS990 records
DNA & barcodingBOLD26 specimens
01Narrative
The pearl stingray (Dasyatis margaritella) is a little-known species of stingray in the family Dasyatidae, found in shallow coastal waters from Mauritania to Angola. Growing to 30 cm across, this species has a rounded pectoral fin disc with a pointed snout, and a wide band of dermal denticles over the back in adults. It closely resembles and is often confused for the much larger daisy stingray (D. margarita); both species are characterized by the presence of an enlarged, nacreous denticle in the middle of the back called a "pearl spine". The International Union for Conservation of Nature (IUCN) assesses the pearl stingray's conservation status as Near Threatened, but it is likely that most of the historically reported fishery catches of the daisy stingray were in fact of this species.
No narrative description available for this taxon yet.
A DNA barcode is a short, standardised stretch of genes that works like a fingerprint — enough to tell one species from another. Below is the molecular trace Fontitrygon margaritella has left across the world's sequence archives.
At a glance
DNA specimens26
BINs1
Marker genes2
Countries4
The DNA barcodethe species' typical barcode, built from every sequenced specimen
COI-5P638 bp consensus24 specimens
ACGT
▸ drag or hover over the strip to read any position — letter and how much it varies
Violet ticks below the strip = positions where individuals differ; flat = the species' unchanging signature. 98% of positions are identical in every specimen.
Where individuals differ — all 10 variable positions, in barcode order
Each circle is a barcode variant; bigger = more specimens, colour = region. Lines join the most similar variants and the tick marks count the mutations between them — a tight cluster is one “dialect”, a long line a more divergent lineage. Click a circle to list its actual specimens.
Diversity (π)0.65%
Haplotypes5
BIN1
Most divergent pair0.94%
Africa
Closest relatives by DNA barcode
The species whose COI barcode is most similar to this one — a quick “who is this most like”. The percentage is how much the barcode differs; it approximates, but is not, the full evolutionary tree.
★ the standard DNA barcode for this group — the short region actually read to tell this species apart. The rest are extra genes sequenced along the way.
★COI-5P16S-ND2
animal barcoderibosomal
08Occurrence & distribution
Record type990 records
Wild obs. + sensor946
Museum / vouchered44
Range
Area of Occupancy AOO584 km²
Depth
0–200 m sunlit11
200–1000 m twilight0
1–4 km midnight0
>4 km abyssal0
median 20 m · max 34 m · 11 records with depth
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Coordinate accuracy93% within 1 km
≤100 m 506≤1 km 18≤10 km 29>10 km 8
561 georeferenced · 385 without coordinates
Open the mapobservation + sensor946
Museum / Voucheredphysical evidence
Backed by a physical specimen — a herbarium sheet, sample or voucher held in a collection. “Vouchered” means supported by material evidence, not just an observation.
Coordinate accuracy100% within 1 km
≤100 m 2≤1 km 4
6 georeferenced · 38 without coordinates
Open the institutions mapphysical evidence44
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
10Collections & institutions
Institution
Specimens
FishBaselocation not on record
5
Florida Museum of Natural History- Zoology, Paleontology & Paleobotanylocation not on record
3
2 institutions · 8 of 44 vouchered records shown · 11 without an institution code