More Details

Also Know As:

| Purple Bullseye

| Spiny Honeycomb Coral

| Starry Cup Coral

|

General info about Starry Night Acan

In the wild, Starry Night Acan comes in two forms: either encrusting or massive. Their colonies may reach over a meter in length. They have circular corallites with thick walls and septa that have long and pointed teeth. Their skeleton is covered with a dense, fleshy tissue that usually forms a concentric fold.

The color of Starry Night Acan is typically mottled dull brown to gray or green. However, they can be brightly colored which can be influenced by environmental factors especially in waters with high nutrient level. This is best exhibited in captive breeding where growers have produced a lavender and bright green variety. One of the popular breeding varieties is the Orange Crush Acan Echinata, Rainbow Acan Echinata, and Lavender Green Acan Echinata.

You also have to look out for other factors and must stay within the range:

  • Calcium: 400 - 450 ppm
  • Alkalinity: 3.2 - 4.8 MEQ/L
  • Phosphates: 0
  • Magnesium: 1200 - 1350
  • Strontium: 8 - 10
  • Temperature: 76° - 83° F (24° - 28° C)
  • Salinity / Specific Gravity: 1.023 - 1.025

Starry Night Acan Diet & Nutrition

In the wild, Starry Night Acan has developed a symbiotic feeding relationship with marine algae called zooxanthellae. But in captivity, you have to feed them with nanoplankton or dissolved organics.

Fragging / Propagating Starry Night Acan

A mature tank is highly recommended in propagating Starry Night Acan. Thriving them with fish is recommended as fish excretes nitrogen that can sustain the coral's growth.

Flow / Lighting Requirements for Starry Night Acan

Starry Night Acan does not need a high flow rate and intense light. Giving them moderate lighting allows the Starry Night Acan to spread their polyps thereby allowing them to feed. Too much light will cause the polyps to be retracted.

Starry Night Acan Origin

Starry Night Acan can be found throughout the Indo-Pacific region. They are widely distributed from East Africa (the Red Sea to Polynesia), Japan, Marshall Islands, and the Great Barrier Reef and Solitary Islands of Australia.

Caution Should be Taken with Starry Night Acan

Except for their own kind, Starry Night Acan is aggressive towards other species. During the night, they extend their tentacles and sting nearby corals. It is recommended to observe proper spacing between corals. Further, they have the tendency to be overpowered with soft corals and will die especially if soft corals outnumber them.

How to Acclimate Starry Night Acan

Starry Night Acan Acan is purely marine. So, therefore, salinity must be maintained thoroughly at 1.023 to 1.025 specific gravity.

Stinging Tentacles on Starry Night Acan

During the night, they extend their tentacles and sting nearby corals.

Relevent Articles

Original Detail

Name Species Family Scientific Name More Detail Added by
Starry Night Acan Acanthastrea Mussidae Acanthastrea echinata

In the wild, Starry Night Acan comes in two forms: either encrusting or massive. Their colonies may reach over a meter in length. They have circular corallites with thick walls and septa that have long and pointed teeth. Their skeleton is covered with a dense, fleshy tissue that usually forms a concentric fold.

The color of Starry Night Acan is typically mottled dull brown to gray or green. However, they can be brightly colored which can be influenced by environmental factors especially in waters with high nutrient level. This is best exhibited in captive breeding where growers have produced a lavender and bright green variety. One of the popular breeding varieties is the Orange Crush Acan Echinata, Rainbow Acan Echinata, and Lavender Green Acan Echinata.

You also have to look out for other factors and must stay within the range:

  • Calcium: 400 - 450 ppm
  • Alkalinity: 3.2 - 4.8 MEQ/L
  • Phosphates: 0
  • Magnesium: 1200 - 1350
  • Strontium: 8 - 10
  • Temperature: 76° - 83° F (24° - 28° C)
  • Salinity / Specific Gravity: 1.023 - 1.025
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