India, Aug. 14 -- Two smooth-coated otters arrived at the Delhi Zoo on Thursday afternoon from the Surat Zoo in Gujarat. The species was last seen at the zoo in 2004.

Zoo officials said the two will be kept in quarantine for three to four weeks. "Otters like clear water and special ponds will be constructed for them," said zoo director Sanjeet Kumar.

The pair, around 2.5 years old, reached the zoo in a special truck at 1pm, after a 1,200km journey across four states - Gujarat, Madhya Pradesh, Rajasthan, and Delhi - over two days.

The transporting vehicle had water tanks and ample fishes to bring them here without any stress.

Veterinary officer Abhijit Bhawal said the otters were fed species of fish including Bombay duck fish, mud fish...