Daggernose Sharks are an inshore tropical species that is endemic to the coastal waters off northern South America, in areas with humid tropical climate with coasts covered by extensive mangrove systems, wide continental shelves, and highly turbid waters. They are most often found in deeply indented coastlines with large numbers of rivers, islands and estuaries. There are very few images of this shark because they are so endangered.
The sharks have limited breeding for a few reasons: only 2-8 pups, a 12-month gestation, and a possibly biennial (every two years) reproductive cycle. This results in a low population growth rate, making it highly susceptible to declines. Recent studies have shown that the population is declining at a rate of 18.4% per year.
Fisheries and loss of food in their habitat mainly threaten the Daggernose Shark. The species is often caught in floating gillnet artisanal fisheries. Fishing pressure is intense across its range in South America and will continue to increase into the future, restricting re-colonization to depleted areas. These factors are what have contributed to the Daggernose Shark being considered Critically Endangered, for which urgent conservation and management action is required.
The Daggernose Shark is considered to be a Critically Endangered Species – which is defined as facing an extremely high risk of extinction in the wild.
Daggernose Shark Facts
Scientific Name: Isogomphodon Oxyrhynchus
Status: Critically Endangered
Length: 3.38-5.25 feet.
Lifespan: 20 years for females, 12 for males.
Size at birth: 42 cm.
Why They Matter
Daggernose sharks are an extremely important part of the marine ecosystem in South America.
*Daggernose Shark information from the IUCN Red List