Rediscovery of the Giant Salmon Carp in the Mekong River

Source: This post on Rediscovery of the Giant Salmon Carp in the Mekong River has been created based on the article “Giant fish thought to be extinct is spotted in the Mekong River” published in Indian Express on 25th October 2024.

Why in news?

The giant salmon carp (Aaptosyax grypus), once thought to be extinct has been spotted three times in the Mekong River in Cambodia in recent years.

About giant salmon carp (Aaptosyax grypus)

1. The giant salmon carp, scientifically known as Aaptosyax grypus is a fascinating species native to freshwater habitats in East Asia, particularly in regions like the Amur River basin.

2. These fish are known for their impressive size, with adults typically reaching lengths of up to 1 meter (about 3.3 feet) and weights of over 30 kilograms (66 pounds).

3. Physical Characteristics

i) Giant salmon carp have a robust, elongated body with a distinctive head shape and large, wide mouth.

ii) Their coloration varies, usually featuring a silvery or greenish hue, which helps them blend into their freshwater environments.

iii) They possess barbels (whisker-like structures) near their mouths, aiding in foraging for food along the riverbed.

4. Habitat: These fish thrive in rivers, lakes, and reservoirs, preferring areas with slow-moving water and abundant vegetation. They are often found in regions with rich biodiversity, as they rely on a variety of food sources, including detritus, aquatic plants, and small invertebrates.

5. Diet: Their diet primarily consists of algae, detritus, and small invertebrates, playing a vital role in the ecosystem by helping to control plant growth and nutrient cycling.

6. Conservation Status: While not currently classified as endangered, giant salmon carp face threats from habitat loss, pollution, and overfishing. Conservation efforts are important to maintain healthy populations and protect their natural habitats.

7. Cultural Significance: In some cultures, giant salmon carp are valued not only for their size and taste but also for their role in local traditions and folklore.

They are sometimes featured in fishing tournaments and are appreciated for their challenge to anglers due to their strength and size.

UPSC Syllabus: Species in news