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Where do starfish come from?

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Ugla

Well-known member
Joined
Jul 23, 2004
Messages
225
Location
Lynnwood, WA
I got up this morning and found 2 small stars (about 3/8" across) on my front glass. My reef is 4 years old and I have not added anything new in 9 months. Never seen stars before. Jim
 

NaH2O

Well-known member
Joined
Jan 25, 2004
Messages
8,568
Welcome to Reef Frontiers!!! Hope you are enjoying the site.

I suspect they were hitchhikers from a piece of live rock, and you just happened to catch them. Also, if you happened to seed your sand (if you have substrate) with a scoop from an established tank, then they can arrive this way as well.
 

Curtswearing

Mantisfreak
Joined
Nov 20, 2003
Messages
2,203
Location
St. Louis, MO
Starfish may reproduce either sexually or asexually. When asexual reproduction takes place, the animal breaks itself into two pieces. From these pieces, the animal is able to regenerate new body parts, eventually becoming whole again. Regeneration is also used when a starfish loses an arm, which is a fairly common occurrence.

You might have a small micro-brittlestar or you might have an asterina starfish. The asterina's commonly reproduce asexually in reef aquaria.
 
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