Question

Suckermouth catfish or Pleco, an exotic fish species frequently being recorded in Indian waters, is native to :

• A. South America
• B. North America
• C. China
• D. Africa

Hint:

Plecos are armored catfishes belonging to the family Loricariidae. This entire family is endemic to the tropical freshwater habitats of South and Central America.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
Exotic fish species are those introduced to non-native environments, often via the aquarium trade.
When these species escape or are released into local water bodies, they can establish wild populations and become invasive.
Detailed Explanation:
The suckermouth armored catfish, commonly known as Pleco (belonging to the family Loricariidae, primarily species like Pterygoplichthys pardalis or Hypostomus plecostomus), is a popular freshwater aquarium fish.
These fish are characterized by bony plates covering their bodies and a ventral, sucker-like mouth used to scrape algae from substrates.
Loricariid catfish are native to the tropical freshwater basins of South America, particularly the Amazon and Orinoco river basins.
In India, due to accidental releases and aquarium dumping, plecos have established breeding populations in several major river systems, wetlands, and aquaculture ponds (e.g., in West Bengal, Uttar Pradesh, and Kerala).
Because of their armor-like skin and lack of natural predators, they outcompete native fish species and damage gillnets, posing an ecological threat.

Step 2: Final Answer:
The suckermouth catfish or Pleco is native to South America.