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  • Cucumber (Red & Black) - Holothuria edulis - Edible Sea Cucumber

Cucumber (Red & Black) - Holothuria edulis - Edible Sea Cucumber

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Cucumber (Red & Black) - Holothuria Edulis Taxonomy:
Cucumber (Red & Black) belongs to the Kingdom Animalia, Phylum Echinodermata, Class Holothuroidea, Order Aspidichirotida, Family Holothuriidae, Genus Holothuria and Species edulis. Scientific names:
The scientific name of Cucumber (Red & Black) is Holothuria edulis. Other common names:
Cucumber (Red & Black) is also commonly known as Edible Sea Cucumber and Pinkfish. Origin or natural range:
Holothuria edulis is found in the Indo-Pacific region including the Red Sea, Hawaii, the Gulf of Mannar, Fiji and the Andaman Islands. Size:
Cucumber (Red & Black) grows up to a size of around twelve inches or thirty centimeters. Color:
Holothuria edulis occurs in the combinations and the variations of pink, brown, green, red and black colors. Compatibility:
Cucumber (Red & Black) is non-aggressive towards the other marine aquarium invertebrates. Habit & Habitat:

  • In its natural habitat, Holothuria edulis is found in shallow waters and in sand on reef terraces near the shore.
  • When stressed, Cucumber (Red & Black) expels its internal organs that are lethally poisonous for fish.
  • Holothuria edulis later on regenerates its harmed organs.
  • Morphology:
  • Cucumber (Red & Black) has a long, tubular, soft, thick and muscular body which is blackish dorsally and pinkish ventrally.
  • The anterior end of the body of Holothuria edulis is narrow while, its posterior end is blunt.
  • The body of Cucumber (Red & Black) is covered with pointed, muscular projections, called as papillae.
  • Holothuria edulis thinly coats its body with sand.
  • The feet of Cucumber (Red & Black) are tubular to facilitate the locomotion and the cucumberÍs clinging to the substrate.
  • Growth enabling environment in your marine aquarium:
  • Temperature of water: Seventy-two to seventy-eight degrees Fahrenheit.
  • Specific gravity of water: 1.023 to 1.025.
  • pH of water: 8.10 to 8.40.
  • Illumination: Cucumber (Red & Black) requires light in the marine aquarium hosting it.
  • Habit & habitat:
  • To host Holothuria edulis, you should have a large, reef type marine aquarium with thick sandy bottom.
  • Provide ample roaming space to Cucumber (Red & Black) in your marine aquarium.
  • Twenty gallons of water per three inches long Holothuria edulis is ideal.
  • Keep Cucumber (Red & Black) with non-aggressive tank members.
  • In a marine aquarium, Holothuria edulis is generally unable to regenerate its damaged organs.
  • Feeding & Nutrition:
  • Cucumber (Red & Black) is Omnivorous or Detrivorous in feeding habit as it consumes algae and detritus present in the sand.
  • Holothuria edulis eats sand and digests the organic food material present in it, excreting the clean, pellet shaped sand.
  • Breeding: Cucumber (Red & Black) does not breed in a marine aquarium.
  • Benefits:
  • Holothuria edulis eats the micro-organisms and detritus present in the sand, thereby cleaning the sand of your marine aquarium.
  • In the search of food, Holothuria edulis ploughs the sand of your reef tank, thus aerating it.
  • Care:
  • Holothuria edulis is difficult to maintain.
  • High Nitrates and copper levels in the water are detrimental to the health of Cucumber (Red & Black).
  • Caution:
  • Holothuria edulis is poisonous in nature and therefore, should be handled and maintained by expert aquarists only.
  • If threatened or stressed, Cucumber (Red & Black) expels its internal organs that are poisonous and lethal for the fish in your marine aquarium.
  • Cucumber (Red & Black) expels poisonous membranes even if it dies. In case the cucumber dies in your marine aquarium, change the tank water several times. Tie some carbon in a mesh and place it near the aquarium filter to eliminate even the traces of poison.