Couple Of Discoveries During (lights Out)

[Bfofre]

Found some things in my tank.. Never seen them before mostly cause I hadn't been looking... But put the flashlight on the tank tonight an hour after lights out.

Looks like a blueish coloured slug? I found many of these.. About 1/2inch
The snail, size of pencil erasee, found 2 of these

I have no issues with my tank, nothing shows out of the ordinary..
What are these hitchhikers?

Thanks

 

[Bfofre]

Best I can tell.. Some kind of stomatella.. So I'll assume harmless

 

[Bfofre]

And possibly a nerite snail?

 

[Bfofre]

Or collinista?

 

[Poseidon]

First 3 def stomella, the large strain, I have them and they are no trouble.
The last pic I'm not sure. If you see it on a coral it's def not good but if it's just grazing rock I wouldn't worry about it

 

[Bfofre]

Better pic?

 

[yveterinarian]

The snail is definitely a collonista snail. They, also are considered harmless.

 

[EricTMah]

My tank is covered in both of these during lights out. I've never seen them on my corals. They all seem to be harmless.

 

[scubasteve]

i also have those slug things everything i have read says they are great and shows a mature system big algae and detritus eaters as well

 

[Jewel]

I agree, Harmless