Whats this?

[Tlc]

First 2 pictures are of top of specimen and last picture is bottom showing it stuck to the glass.

 

[Big-j]

The second pic looks like some type of isopod, are you a SW?

 

[Tlc]

Yes its a saltwater

 

[Big-j]

I would say a large isopod, you haven't noticed a parasite attached to any of your fish have you?

 

[Tlc]

Yes it's possible I guess cause they were rubbing but since I added my cleaner wrasses and cleaner shrimp no one is rubbing.

 

[Big-j]

Idk what to tell you some Isopods are parasitic and others aren't, maybe you don't have the bad kind... Hope not at least

 

[Tlc]

Thanks I hope not

 

[austinsdad]

Isopod

 

[Tlc]

Is this a good one?

 

[anarekist]

ewwwwwwwwww

 

[Tlc]

I removed the thing no sure if it wad good or bad! Hopefully that's all of them I used tweezers and man was the back like a rock it was buzzare.

 

[Zer0]

If you don't know what it is, chances are, it's best to remove it. Could be good, but worst case scenario it's bad, and your tank suffers for it.

 

[Kalin0121]

If it's back was hard it and it looked kinda like a slug it was probably a Stomatellas. If so it's a type of snail with only a partial shell that you can't really see because it blends in with it's body. They are harmless algae eaters.

 

[Crazyjake14]

I have one of these in my tanks as well I noticed it on the back hitchhiker snail I'm guessing a stomella. Then yesterday it died could that have killed it because it had a cracked shell which it didn't have a day prior.

 

[Zer0]

It's not a stomatella. Doesn't look anything like it. If it looks anything like the one in this picture, but has a hard texture to it, then chances are above all it's going to be a chiton. Stomatellas are very flat and their shell only covers a small portion of their bodies. The shells look more like finger nails. The one in this picture looks like an isopod or a chiton.

On a separate note, judging by the pictures provided, it looks more like a flatworm to me. But since the op stated it was hard, then my guess is isopod. chitons generally don't climb on glass, last time i checked.

 

[Tlc]

It didn't have any legs! It was completely flat on the bottom and when I pulled it off it rolled into a ball? The back was very hard it took me a couple min to get off my glass and it was also out of the water. So weird

 

[Kalin0121]

Very small shell on its back? Face looks kinda like a snail?

 

[Tlc]

No it was just hard. The tweezers scraped it as I was trying to pull it off and it sounded like scraping glass so I'm assuming maybe it had a flat shell?

 

[ShMacKDizZLe]

Look up something called a chiton. They come in different colors and sizes and I think they're a type of mollusc

 

[Tlc]

That's it! It's a chiton for sure Thank you!