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Image of Knifetooth Dogfish

Knifetooth Dogfish

Scymnodon ringens Barbosa du Bocage & de Brito Capello 1864

Diagnostic Description

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Black in color; small dorsal fin spines; short snout; small lanceolate teeth without cusplets in upper jaw and huge high, knife-cusped cutting teeth in lower jaw; mouth very wide and broadly arched; caudal fin with weak subterminal notch and no lower lobe (Ref. 247).
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Recorder
Cristina V. Garilao
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Life Cycle

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Probably ovoviviparous (Ref. 247). Distinct pairing with embrace (Ref. 205).
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Cristina V. Garilao
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Morphology

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Anal spines: 0; Analsoft rays: 0
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Cristina V. Garilao
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Biology

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A rare species (Ref. 26346) inhabiting continental slopes (Ref. 247). Usually mesopelagic although taken most often near the bottom (Ref. 10717). Its razor-edged lower teeth is used to attack and dismember large prey (Ref. 247). Ovoviviparous (Ref. 205). Utilized dried salted for human consumption and for fishmeal (Ref. 247).
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Recorder
Kent E. Carpenter
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Importance

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fisheries: minor commercial; price category: unknown; price reliability:
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Recorder
Kent E. Carpenter
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