Elasmobranchii (sharks and rays) > Carcharhiniformes
(Ground sharks) > Carcharhinidae
Etymology: Isogomphodon: Greek, isos = equal + Greek, gomphos = nail + Greek,odous = teeth (Ref. 45335).
Environment / Climate / Range
Marine; brackish; demersal; depth range ? - 15 m (Ref. 13608). Tropical, preferred ?; 12°N - 20°S, 63°W - 34°W (Ref. 244)
Western Atlantic: Trinidad, Guyana, Suriname, French Guiana, and Brazil.
Length at first maturity / Size / Weight / Age
Maturity: Lm 115.0  range ? - ? cm
Max length : 160 cm TL male/unsexed; (Ref. 34266); common length : 100.0 cm TL male/unsexed; (Ref. 5217); max. reported age: 12 years (Ref. 34266)
Large number of teeth, great length of very narrow snout. Yellow-gray above and white below (Ref. 6032).
An inshore shark found over rocky bottoms, entering estuaries and river mouths. Feeds on small schooling fishes including herring, anchovies and croakers. Viviparous, generally 4 embryos per brood; size at birth 38 to 41 cm. 244 cm record unconfirmed.
Distinct pairing with embrace (Ref. 205). Viviparous, placental (Ref. 50449).
Compagno, L.J.V., 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 2 - Carcharhiniformes. FAO Fish. Synop. 125(4/2):251-655. Rome: FAO. (Ref. 244)
IUCN Red List Status (Ref. 109396)
CITES (Ref. 94142)
Fisheries: subsistence fisheries
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00537 (0.00250 - 0.01151), b=3.09 (2.91 - 3.27), based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 4.5 ±0.80 se; Based on food items.
Resilience (Ref. 69278
): Very Low, minimum population doubling time more than 14 years (K=0.11-0.12; tm=5-7; tmax=12; Fec=4).
Prior r = 0.09, 2 SD range = 0.01 - 0.85, log(r) = -2.41, SD log(r) = 1.14, Based on: 1 K, 4 tgen, 1 tmax, 2 Fec records
Vulnerability (Ref. 59153
): High to very high vulnerability (74 of 100) .