Moby needs help!

[nikkipigtails]

First, water params because I know you'll ask:
Ammonia: 0
Nitrites: 0
Nitrates: 0
Phosphates: 0
Calcium: 420 ppm
Alkalinity: 6.9 dKh
Magnesium: 1350 ppm
pH: 8.0
SG: 1.024

Tank is 180 gallon with Moby, a six line and a lettuce nudibranch as the only inhabitants. Tank is fed mush every 4 days (six line is eating pods) but Moby is spot fed every other day.

Now the problem...I was sitting on my couch watching the tank and I noticed a bright white spot on Moby (my giant bubble tipped brittle star). Upon closer inspection, I noticed that the tip of one of its legs is missing and the tip has turned white. Does anyone have any ideas?

Here's a pic:

 

[Witfull]

a wound that is getting a bacterial infection?

 

[nikkipigtails]

I dunno. I'm wondering of the six line bit the end off thinking it was a bristleworm.

 

[nikkipigtails]

 

[AQTCJAK]

Possible bite or even a bristle worm on the serpent

 

[BaxReefs]

I am betting on the six line thinking it was dinner and attempting to take a bite.

... I don't think the nudi would be inerested in a worm for dinner

I am also betting that with good clean water & solid params it be OK. They are pretty tough!

 

[tippMANn98]

Its ok Nikki, if it just broke of or even if eaten, Its still a star, It WILL regenerate its legs. So no worries!

 

[nikkipigtails]

Thanks, guys. It looks about the same today. I guess no change for now is a good thing. I'll keep you posted.

 

[nikkipigtails]

I take it back. The tip of one of Moby's other arms has turned white too.

 

[nikkipigtails]

 

[DAHansen]

Nikki, I've been searching, but I can't really find any good info other than "wait it out" and make sure the water parameters are good.

Is it just turning white, or has there been any tissue loss?