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Home > Marine Invertebrates > Urchins > Longspine Urchin, Black
Longspine Urchin, Black (Diadema setosum)
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Due to variations within species, your item may not look identical to the image provided.
 QUICK STATS
Care Level: Easy
Temperament: Peaceful
Reef Compatible: Yes
Water Conditions: 72-78° F, dKH 8-12, pH 8.1-8.4, sg 1.023-1.025
Max. Size: 10"
Color Form: Black, Blue, Green, White
Venomous: Yes
Diet: Herbivore
Supplements: Calcium, Iodine, Trace Elements
Compatibility: View Chart
Origin: Caribbean, Fiji, Indonesia
Family: Diadematidae

What do these Quick Stats mean? Click here

overview
The Black Longspine Urchin, also known as Long-spined Sea Urchin, has a body which is predominately black with a red eyespot in the center. The spines on these urchins are long, thin and completely black. They are a very delicate looking urchin, which are actually very capable of protecting itself. These urchins are excellent algae controllers for an aquarium housing aggressive fish.

Provide an aquarium with ample hiding places and room to roam. Being a nocturnal creature, the Black Longspine Urchin will hide during the day and only come out at night to forage for food such as algae and seaweed. These urchins are an excellent algae controller for an aggressive aquarium where other invertebrates would be eaten. When approached by a fish, these urchins will sense their presence, and will defend itself by directing its spines towards its offender.

It is very sensitive to high levels of copper-based medications and will not tolerate high nitrate levels. If it begins to shed its spines, it is a sign of very poor water quality.

Be aware, it is venomous, with its sting being roughly equivalent to that of a bee sting.

The diet may be supplemented with dried seaweed.

Approximate Purchase Size: Small: 1-1/2" to 2"; Medium: 2" to 3" Large: 3" to 4"


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*Prices subject to change on out of stock items
  SW - Longspine Urchin, Black (Indonesia) - Small
  CN-78135,  $ 19.99
 
    
  SW - Longspine Urchin, Black (Indonesia) - Medium
  CN-79349,  $ 24.99
 
    
  SW - Longspine Urchin, Black (Indonesia) - Large
  CN-79362,  $ 29.99
 
    
  SW - Longspine Urchin, Black (Caribbean) - Small
  CN-78128,  $ 19.99
 
    
  SW - Longspine Urchin, Black (Caribbean) - Medium
  CN-78129,  $ 24.99
 
    
  SW - Longspine Urchin, Black (Caribbean) - Large
  CN-78130,  $ 29.99
 
    
  SW - Longspine Urchin, Black (Fiji) - Small
  CN-78131,  $ 19.99
 
    
  SW - Longspine Urchin, Black (Fiji) - Medium
  CN-78132,  $ 24.99
 
    
  SW - Longspine Urchin, Black (Fiji) - Large
  CN-78134,  $ 29.99
 
    
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Acclimation Guide
Learn how to properly acclimate your new species here.

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