Hemitriakis indroyonoi, known commonly as the Indonesian Houndshark in Indonesia

Indonesia

Indonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...

, is a species of houndshark in the genus Hemitriakis

Hemitriakis

Hemitriakis is a genus of houndshark in the family Triakidae.-Species:* Hemitriakis abdita Compagno & Stevens, 1993 * Hemitriakis complicofasciata Takahashi & Nakaya, 2004...

. It is a tropical houndshark, known from the eastern Indonesian

Indonesia

Indonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...

 islands of Bali

Bali

Bali is an Indonesian island located in the westernmost end of the Lesser Sunda Islands, lying between Java to the west and Lombok to the east...

 and Lombok

Lombok

Lombok is an island in West Nusa Tenggara province, Indonesia. It forms part of the chain of the Lesser Sunda Islands, with the Lombok Strait separating it from Bali to the west and the Alas Strait between it and Sumbawa to the east...

, in the Indian Ocean

Indian Ocean

The Indian Ocean is the third largest of the world's oceanic divisions, covering approximately 20% of the water on the Earth's surface. It is bounded on the north by the Indian Subcontinent and Arabian Peninsula ; on the west by eastern Africa; on the east by Indochina, the Sunda Islands, and...

. It was described by William T. White, Leonard J.V. Compagno, and Dharmadi in 2009. Females give birth to live young, with no placenta

Placenta

The placenta is an organ that connects the developing fetus to the uterine wall to allow nutrient uptake, waste elimination, and gas exchange via the mother's blood supply. "True" placentas are a defining characteristic of eutherian or "placental" mammals, but are also found in some snakes and...

 or yolk sac

Yolk sac

The yolk sac is a membranous sac attached to an embryo, providing early nourishment in the form of yolk in bony fishes, sharks, reptiles, birds, and primitive mammals...

, and can have between 6 and 11 pups in one litter. When born, the pups measure between 28-30 centimetres long. At first maturity, the houndsharks measure 90 centimetres, and males can go on to reach a maximum length of 120 centimetres, while females can reach a maximum length of 115.2 centimetres.