×

UPSC Courses

DNA banner

DAILY NEWS ANALYSIS

  • 02 February, 2024

  • 2 Min Read

Lamprey fish

A recent study has uncovered two potential new species of lamprey fish in California waters.

About Lamprey Fish

  • Lampreys are boneless, jawless fish with eel-like bodies that date back over 350 million years.
  • They belong to a relic (primitive) group of jawless fish called Agnathans.
  • They live in coastal and fresh waters and are found in temperate regions around the world, except Africa.
  • Features:
    • They range from about 15 to 100 centimetres (6 to 40 inches) long.
    • Unlike "bony" fish like trout, cod, and herring, lampreys lack scales, fins, and gill covers.
    • They breathe through a distinctive row of seven pairs of tiny gill openings located behind their mouths and eyes.
    • Like sharks, their skeletons are made of cartilage.
    • Lamprey’s jawless mouth is a circular, fleshy sucker filled with hundreds of small teeth and a rasping tongue.
    • They are migratory fish, moving between fresh and saltwater to complete their lifecycle.
    • They spend most of their lives at sea and only move into freshwater to spawn and for their juvenile life stage.
    • They attach themselves to large animals like fish and whales using their sucker mouth. They feed as parasites, rasping into the host’s flesh with their sharp teeth and sucking out blood.

Source:


Oceanic Anoxic Event 1a and MASS EXTINCTION

Oceanic Anoxic Event 1a from the Paris Basin (Environment) Paper-3 PMP OAE 1a refers to a period during the Cretaceous Period (145 million years ago and ended 66 million years ago) when Earth's oceans became depleted of oxygen, causing a significant disruption in marine life.  Cause: The event is believed to have been

Viksit Panchayat Karmayogi (Good governance)

Viksit Panchayat Karmayogi (Good governance) Governance GS PAPER-2 PMP Dr. Jitendra Singh launched the ‘Viksit Panchayat Karmayogi’ initiative on Good Governance Day, celebrated to mark the 100th birth anniversary of former Prime Minister Atal Bihari Vajpayee. The initiative, which is part of the broader ‘Prashasan Gaon

Major programmes to control Air Pollution

Major programmes to control Air Pollution National Clean Air Programme? It was launched by the Ministry of Environment, Forests and Climate Change (MoEFCC) in January 2019. It is the first-ever effort in the country to frame a national framework for air quality management with a time-bound reduction target. The

Air pollution and Air quality Measures in India

Air pollution and Air quality Measures in India (Environment) GS Paper-3 P-M-P Air pollution may be defined as the presence of any solid, liquid or gaseous substance including noise and radioactive radiation in the atmosphere in such concentration that may be directly and/or indirectly injurious to humans or other l

Geopolitical Significance of Ports

Geopolitical Significance of Ports (IR)  Act as geopolitical assets: Ports enhance the projection of strategic reach, which helps strengthen the country’s control over important sea and energy supply routes.  E.g. Indian Navy’s staging base at Agalega Islands will enable marine patrols

Toppers

Search By Date

Newsletter Subscription
SMS Alerts

Important Links

UPSC GS Mains Crash Course - RAW Prelims Answer Key 2024