Question:

Piaractus brachypomus is native to

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Most pacu species, including the red-bellied pacu (Piaractus brachypomus), originate from the warm, nutrient-rich river systems of South America (the Amazon and Orinoco).
  • North America
  • South America
  • China
  • Africa
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The Correct Option is B

Solution and Explanation

Step 1: Understanding the Concept:
Cultured freshwater fish species often have specific native geographical ranges before being introduced globally for aquaculture or aquarium trades.
Analyzing the native habitats of exotic species helps in understanding their environmental requirements and potential ecological impacts as invasive species.

Step 2: Detailed Explanation:

Piaractus brachypomus is commonly known as the red-bellied pacu.
It belongs to the family Serrasalmidae, which is closely related to the piranhas.
This freshwater species is native to the tropical river basins of South America, specifically the Amazon and Orinoco River basins.
In its native habitat, it is a highly valued food fish and is characterized by its omnivorous diet, feeding on fruits, seeds, nuts, and small invertebrates.
Due to its rapid growth rate, tolerance to low dissolved oxygen, and high meat quality, it has been widely introduced to other parts of the world, including India, for commercial aquaculture.
However, in many non-native environments, it is considered an exotic or potentially invasive species that can disrupt local aquatic food webs.
Thus, its native home is South America.

Step 3: Final Answer:

Piaractus brachypomus is native to South America.
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