Which one of the following belongs to 'Pisces'?

Which one of the following belongs to ‘Pisces’?

Dogfish

Jellyfish

Silverfish

Starfish

Answer is Right!

Answer is Wrong!

This question was previously asked in

UPSC NDA-1 – 2022

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‘Pisces’ is a traditional classification group that includes all fish. Dogfish (a type of shark) is a cartilaginous fish belonging to the class Chondrichthyes, which falls under Pisces. Jellyfish belong to the phylum Cnidaria, Silverfish are insects belonging to the phylum Arthropoda, and Starfish belong to the phylum Echinodermata. None of Jellyfish, Silverfish, or Starfish are fish (Pisces).

Pisces includes all true fish (aquatic vertebrates with gills, fins, and typically scales). Many organisms with “fish” in their name are not true fish.

The term ‘Pisces’ is often used as a superclass encompassing the classes Chondrichthyes (cartilaginous fish) and Osteichthyes (bony fish), and sometimes the jawless fishes (Agnatha). Modern classification often replaces Pisces with specific classes like Chondrichthyes, Actinopterygii, Sarcopterygii, etc.

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