One out of three cartilaginous fishes under threat of extinction: IUCN


K M Baiju

The Pondicherry shark that was found on the Indian shore has become extinct according to the report published in Current Biology.

Pondicherry shark and Ganges shark

Kozhikode: According to the Red List review held by the International Union for Conservation of Nature (IUCN), one out of three cartilaginous fishes including sharks and stingrays are under threat of extinction due to excessive fishing. The condition in the Indian ocean is also quite concerning. The Pondicherry shark that was found on the Indian shore has become extinct, according to the report published in Current Biology.

The report shows that four species are on the verge of extinction (critically endangered). Lost shark, Java stingaree, Red sea torpedo, Pondicherry shark are suspected to have become extinct. The first three haven’t been spotted in over a century and Pondicherry sharks haven’t been spotted in thirty years. They were found in North Indian ocean. The species found in the Indian ocean including Tentacled butterfly ray, Indian sharpnose ray and Ganges shark found in Ganga have become regionally extinct.



shark
Pondicherry shark and Ganges shark

Excessive fishing is what has led to the decline in the fish population and threatens the existence of over 67.3 percent fishes. Other causes include loss of habitat (31.2 percent), climate change (10.2 percent), and pollution (6.9 percent).

The report sheds light on the importance of the control of fishing practices to protect the biodiversity in oceans. Protected zones must be formed. The review was held in the presence of the senior scientist at the Zoological Survey Of India, Southern Regional Centre, Dr Bineesh Kinattumkara and 322 other researchers. 17 workshops were held as a part of this.

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