Tegillarca Granosa


Tegillarca Granosa (also called Anadara Granosa) is types of ark shellfish known as the blood cockle or blood mollusk. It is called by this name because of the red hemoglobin fluid inside the delicate tissues.

Besides, it is found all through the Indo-Pacific location from the eastern shore of South Africa northwards. Also, eastwards to Southeast Asia, Australia, Polynesia and up to northern Japan.

Although, it lives for the most part in the intertidal zone at one to two meters of water depth. But it is tunneled down into sand or mud. The grown-up measure is around 5 to 6 cm long and 4 to 5 cm wide.

Source: www.image.freepik.com

On the other hand, it has a high monetary incentive as nourishment. Also, it is kept in the aquaculture. Just on the shoreline of Zhejiang Province alone, blood cockle ranches possess around 145,000 mu of mudflats.

These shellfishes are brought up in the stream estuaries of the neighboring Fujian Province as well. The meat of this bivalve is served steamed, bubbled, cooked, or generally crude.


NameBlood Cockle
Scientific NameTegillarca granosa
SynonymsArca obessa Kotaka,
Arca granosa,
Arca aculeata Bruguière

Vernacular Names

  • English: Blood Cockle
  • Chinese: 泥蚶
  • German: Rotfleischige Archenmuschel
  • French: Arche granuleuse
  • Hiligaynon: Bakalan
  • Italian: Arca asiatica
  • Lango: Kakandu
  • Mandarin Chinese: 泥蚶
  • Spanish: Arca del Pacífico occidental
  • Telugu: Buditigulla
  • Thai: Hoy kraeng

Distinctive Features

Tegrillarca Granosa has some distinctive features. These include the gills that are like fishes. On the other hand, human beings highly consume them.


Boundless in the Indo-West Pacific, from East Africa to Polynesia. North to Japan and south to northern and eastern Australia.


Besides, shell equivalve, thick and strong, applaud, firmly swelled, somewhat longer than high and weakly inequilateral. Umbones emphatically distending, cardinal region rather huge.

Around 18 spiral ribs (15 to 20) with wide interstices at every valve. Ribs hefty and particularly rugose, bearing regular, often rectangular knobs. Periostracum rather thin and smooth.

source: www.biologyjunction.com

Interior edges with solid crenulations comparing with the outer outspread ribs. Although, no byssal expand. Outside of shell white under the yellowish dark colored periostracum.

On the other hand, the internal side white frequently tinged light yellow towards the umbonal pit. Besides, the maximum length of the shell is 9 cm, commonly to 6 cm.


The ecology of Tegillarca Granosa is below:

Food Habits

Usually, it feeds upon organic detritus, unicellular algae, phytoplankton. On the other hand, they are host to the ectoparasite Pseudomyicola spinosus. Also, they prey upon by the puffer fish species Takifugu oblongus.


Besides, Granosa can live in 20m water depth, however, amasses in the littoral region. Granosa is a commonly intertidal animal group which normally lives in a zone of the silty base.

source: www.media.routard.com

Along with generally low saltiness and some season of drying up each day. Although, their nourishing propensity is identified with the base feed where they live. Besides, their critical supplement segments are natural rubbish.

Life Span Of Tegillarca Granosa

Although, Granosa imitates from August to February of the following year and starts to develop at 1+ years old – 2+. One female can deliver 518,400 – 2,313,200 eggs.

But they can be versatile to the saltiness of 14 – 300 and ideal temperature extending from 20 – 30°C.

Behavior Of Tegillarca Granosa

Although, it breeds almost a whole year in India with a spawning activity from January to April.


Known Hazards

On the other hand, they are hardly edible by the human being because of their sever bad taste.

Similar Species

Species that are similar to Tegillarca Granosa are T. granosa.

Fun Facts Of Tegillarca Granosa

Some fun facts of  Tegillarca Granosa are below:


Besides being fun some of their kinds are dangerous for human beings.


  1. www.eol.org
  2. www.sealifebase.ca
  3. www.gbif.org
  4. www.en.wikipedia.org

Amna Shaheen

I have done Bachelors in Computer Software Engineering from Foundation University in 2017. Now, I am doing MS in Project Management and I am a blogger at TapeDaily. I am very passionate about plants and animals. I like to study about them, so I write blogs that are related to plants and animals.

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