Is my Urchin dying?

[DoINeedAName?]

I have a pincushion urchin, two actually, and one of them seems to be dying. He’s larger than our other one and he’s been dropping spines randomly since day one. He does eat and move around, but I’ve recently noticed a small hole in the very top of his shell (is shell the right word? It’s just at the top of him) and a small black spot on his side. He also started pulling his spines flat at the top near the hole, but today he had a lot pulled flat (pictures for reference that I just took of him)

 

[Sleeping Giant]

The hole at the top is their bum hole, but the laying down of its spines doesn't look good. Do you have fish that could be picking on it?

 

[Sleeping Giant]

Try feeding it selcon

 

[G Santana]

Pull it and feed it nori, that's what I did when mine laid its spines down. It was so efficient at eating algae, it ate itself out of food and I have to supplement it weekly.

 

[DoINeedAName?]

I have a pincushion urchin, two actually, and one of them seems to be dying. He’s larger than our other one and he’s been dropping spines randomly since day one. He does eat and move around, but I’ve recently noticed a small hole in the very top of his shell (is shell the right word? It’s just at the top of him) and a small black spot on his side. He also started pulling his spines flat at the top near the hole, but today he had a lot pulled flat (pictures for reference that I just took of him)

Extra pic of black spot and many dropped spines

 

[Sleeping Giant]

Looks like it didn't make it

 

[DoINeedAName?]

Looks like it didn't make it

Yep, pet store sold us a dying one. Now I know to check for spots I guess.

 

[blaxsun]