ID please.

[lxxnp1234]

I bought some coral some weeks ago. I find two of these starfish in the rocks. I want to know they are safe or not. I mean I want to know it's poison or not.
Because after I have these two little guys, my sixline wrasse was dead next day. Then I catch them and put them out. After one week, I put them back into my tank again, my watchman goby died. BTW, I have a nano tank, 14g biocube.
Thank you for your help. I want to know I can keep it or not. And what kind of starfish it is. brittle star?

 

[ophiura]

No, these are harmless, and beneficial, microbrittlestars. They are considered quite desirable. They are full grown, and I pretty much guarantee you have more than those 2.
Nano tanks are sometimes tough to keep, and several things can go wrong in a very short amount of time. It 100% had nothing to do with these stars.
How long had you had the fish?

 

[lxxnp1234]

Originally Posted by ophiura
http:///forum/post/3162611
No, these are harmless, and beneficial, microbrittlestars. They are considered quite desirable. They are full grown, and I pretty much guarantee you have more than those 2.
Nano tanks are sometimes tough to keep, and several things can go wrong in a very short amount of time. It 100% had nothing to do with these stars.
How long had you had the fish?
Thank you.
The I had that sixline about 2 months and the watchman about half of months.
First I see the starfish, I notice it is very colorful, red and white. So I am thinking about it may be poison.

 

[ophiura]

Nope Red in sea creatures is actually more of a camo coloration. Red wavelenths of light are absorbed quickly in water. Since when you see a color it is the wavelength being reflected...and that wavelength effectively isn't there...that makes the animal very drab actually (in the ocean). Most nocturnal and deep water fish are red.

 

[lxxnp1234]

Thank you very much. I will put them back to my tank. If I have additional question, I hope you could help me.

 

[lxxnp1234]

Originally Posted by ophiura
http:///forum/post/3162651
Nope Red in sea creatures is actually more of a camo coloration. Red wavelenths of light are absorbed quickly in water. Since when you see a color it is the wavelength being reflected...and that wavelength effectively isn't there...that makes the animal very drab actually (in the ocean). Most nocturnal and deep water fish are red.
Forget to ask you. How large will they be?

 

[ophiura]

What you see is what you get
That is basically full grown. They typically reproduce by splitting in half, so often you will see one that has 3 long arms and 3 short arms.
But they stay quite small.