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Questions and Answers
What is the systematic position of scoliodon (Dog fish)?
Phylum: Chordata, Subphylum: Gnathostomata, Superclass: Pisces, Class: Chodrichthyes, Order: Squaliformes, Family: Carcarinidae, Genus: Scoliodon, Species: sorrakowah.
Where is scoliodon widely distributed?
Widely distributed in the Indian, Pacific, West Indies, eastern coast of South America, and Atlantic Ocean.
What are the external features of scoliodon?
Highly streamlined body, elongated and spindle-shaped, partially laterally compressed, head dorsoventrally flattened, pointed rostrum (snout), covered by placoid scales, and dark grey from dorsal and pale white ventral in color.
What is the habitat and habit of scoliodon?
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How does scoliodon reproduce?
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What are the taxonomic classification levels of scoliodon?
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Describe the body shape of scoliodon.
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How does scoliodon give birth?
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What is the coloration of scoliodon?
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How many unpaired median fins does scoliodon have?
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What are the internal fertilization and development processes of scoliodon?
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Describe the body characteristics of scoliodon.
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How is the tail of scoliodon positioned?
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What is the coloration of scoliodon's dorsal and ventral sides?
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How are the fins of scoliodon supported and what types of median and lateral fins does it have?
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Study Notes
Systematic Position of Scoliodon
- Belongs to Phylum Chordata, characterized by having a notochord.
- Subphylum is Gnathostomata, indicating jawed vertebrates.
- Falls under Superclass Pisces, which includes fish species.
- Class Chondrichthyes, representing cartilaginous fish.
- Order Squaliformes, recognized for dogfish sharks.
- Family Carcarinidae, a group of sharks known for their predation.
- Genus Scoliodon, specifically referring to species within dogfish.
- Species identified as S. sorrakowah.
Distribution and Habitat
- Scoliodon has a wide distribution, found in the Indian Ocean, Pacific Ocean, West Indies, and on the eastern coast of South America, as well as the Atlantic Ocean.
- Primarily inhabits marine environments.
Behavior and Reproduction
- Exhibits carnivorous and predatory behavior, preying on crustaceans, worms, and fish.
- Reproductive method is internal fertilization with direct development.
- Viviparous, giving birth to live young.
External Features
- Body is streamlined, elongated, and spindle-shaped for efficient swimming.
- A fully grown Scoliodon measures about 60 cm in length.
- Body is partially laterally compressed with a dorsoventrally flattened head.
- Features a pointed rostrum (snout).
- Tail is slightly bent upwards.
- Body covered with placoid scales providing protection.
- Coloration shows dark grey dorsal (top) and pale white ventral (bottom) sides.
Fins
- Possesses posteriorly directed fins supported by cartilaginous rods and horny fin rays.
- Unpaired median fins include 2 dorsal fins, 1 caudal (tail) fin, and 1 ventral fin.
- Includes paired lateral fins for stabilization and movement.
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Description
Test your knowledge of the detailed study of the Scoliodon (Dogfish) with this quiz. Explore its systematic position, habitat, and feeding habits while learning about its phylum, class, order, and species. Dive into the world of this widely distributed marine species found in the Indian, Pacific, West Indies, Eastern coast of South America, and Atlantic Ocean.
