Question

The antibiotic permitted for use in aquaculture is,

• A. Ciprofloxacin
• B. Florfenicol
• C. Amoxicillin
• D. Ampicillin

Hint:

Florfenicol and Oxytetracycline are two of the most widely approved veterinary-exclusive antibiotics permitted for commercial aquaculture use.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
The use of antibiotics in aquaculture is strictly regulated globally to prevent chemical residues in seafood and to mitigate the risk of developing antimicrobial resistance (AMR) in aquatic environments.

Step 2: Detailed Explanation:
Most broad-spectrum antibiotics used in human medicine (such as fluoroquinolones like Ciprofloxacin, and critically important penicillins like Amoxicillin and Ampicillin) are banned or strictly prohibited from use in aquaculture.
This ban prevents the selection of resistant bacterial strains that could transfer resistance genes to human pathogens.
Florfenicol is a fluorinated derivative of thiamphenicol.
It is a veterinary-exclusive, broad-spectrum antibiotic developed specifically for animal use, with no direct counterparts in human clinical medicine.
Florfenicol is legally approved and permitted (under strict veterinary prescription and withdrawal period regulations) in many countries, including India, the USA, and the EU, for treating bacterial diseases in aquaculture.
It is highly effective against major bacterial pathogens of fish, such as *Aeromonas salmonicida* (causing furunculosis), *Flavobacterium psychrophilum* (cold-water disease), and *Edwardsiella ictaluri* (enteric septicemia of catfish).
Therefore, Florfenicol is the permitted antibiotic among the choices.

Step 3: Final Answer:
The antibiotic permitted for use in aquaculture is Florfenicol.