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Diagnostic Description

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This species is distinguished by the following characters: triangular or squared tipped first dorsal fin (vs. never squared tipped in S. ugoi, S. cabofriensis); neurocranium with a narrow basal plate (vs. broad in S. cabofriensis); color pattern with saddles not delineated by light or dark spots (vs. delineated by light or dark spots in S. boa); saddles darker than background color and lacking sharp median projections (vs. saddles indistinct S. cabofriensis, S. boa, with sharp median projections in S. ugoi); spots large and small, sometimes sickle-shaped or lunate and with clear centers on the back and sides, arranged in approximate bilateral symmetry, and sometimes present in intersaddle regions (vs. spots spiracle-sized, randomly distributed, not sickle-shaped or lunate in S. cabofriensis); rounded and short snout, preoral length 4.5% TL (vs. 5% TL in S. ugoi, S. cabofriensis); short and depressed head, length 17.5-19.2% TL (vs. 19.7-20.8% in S. cabofriensis; 19.5-20.3% in S. ugoi); interdorsal space 1.2-2 times dorsal-caudal space (vs. 2 times in S. cabofriensis; 2.1-2.5 in S. ugoi); claspers with ventral terminal cartilage 2 slender and positioned above ventral terminal cartilage, length 1.8 times in ventral terminal cartilage (vs. 1.5 times in S. cabofriensis); ventral terminal cartilage without a prominent groove posteriorly or with shallow and poorly developed groove (vs. groove well developed in S. cabofriensis); small-sized, adult males at about 35.3 cm TL, adult females at about 41.5 cm TL (vs. 44.5 cm and 50.0 cm TL, respectively, in S. ugoi) (Ref. 107325).
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Estelita Emily Capuli
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Life Cycle

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Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449).
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Susan M. Luna
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Biology

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This species is reported to be associated with coral or calcareous algal formations where it possibly lays it egg-capsules. Stomach contents include squid beaks and skeletal elements of bony fishes. Reported males with well-developed claspers at about 35.3 cm TL; females as adults from 41.5 cm TL. Egg-capsules observed to have light amber to yellowish colour, without longitudinal grooves and measure about 6.0 cm in length, 2.5 cm in width (Ref. 107325). Found on the continental shelf and upper slope. Oviparous. Not utilized at present (Ref. 244).
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Kent E. Carpenter
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Importance

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fisheries: of no interest
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Freckled catshark

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The freckled catshark (Scyliorhinus haeckelii) is a catshark of the family Scyliorhinidae. It is found on the continental shelf and upper slope from the western Atlantic from western Venezuela, Suriname, Brazil, and Uruguay, between latitudes 11° N and 32° S.[2] However, specimens from the northern part of this range probably refer to other species.[1]

Description

The freckled catshark ranges from 10 to 13 cm long as a hatchling and can range from 25 to 60 cm as it reaches maturity.[3][2] It is known for its long slender body and for its dark saddles with small black dots covering the dorsal area. The head of the shark contains no nasoral grooves and the small nasal flaps of the shark do not reach its mouth. Their mouth contains grooves on the lower lip only. The first dorsal fins are located behind the pelvic insertions and the second are located anterior to anal insertion. The second dorsal fin is smaller than the first.[3]

Distribution and habitat

The freckled catshark inhabits the tropical Atlantic oceans at depths of 37–402 m (121–1,319 ft) (mostly below 250 m). They take refuge in the deep reefs or the upper slopes of the reef.[1][2] They are oviparous and deposit their egg cases on coral and sea-fan ocean floor. The egg sacks measure about 2.5 cm × 6 cm (0.98 in × 2.36 in).[2][3]

Fisheries

Traditionally, this species is of no interest for fisheries.[1][2] It is taken as bycatch in bottom trawl and long-line fisheries. However, since early 2000s, it has attracted commercial interest in some areas of southern Brazil. Species-specific catch are not available.[1]

References

  1. ^ a b c d e Rincon, G. (SSG South America Regional Workshop June 2003) (2004). "Scyliorhinus haeckelii". IUCN Red List of Threatened Species. 2004: e.T44589A10909893. doi:10.2305/IUCN.UK.2004.RLTS.T44589A10909893.en.
  2. ^ a b c d e Froese, Rainer; Pauly, Daniel (eds.) (2017). "Scyliorhinus haeckelii" in FishBase. February 2017 version.
  3. ^ a b c Compagno, L.J.V. "Freckled catshark (Scyliorhinus haeckelii)". Marine Species Identification Portal: Sharks of the World. Retrieved 13 March 2014.
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Freckled catshark: Brief Summary

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The freckled catshark (Scyliorhinus haeckelii) is a catshark of the family Scyliorhinidae. It is found on the continental shelf and upper slope from the western Atlantic from western Venezuela, Suriname, Brazil, and Uruguay, between latitudes 11° N and 32° S. However, specimens from the northern part of this range probably refer to other species.

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