What is this?

[emilyruthwinsor]

Hey everyone,

Apologies for the dirty glass (going through an algae outbreak!) but does anyone happen to know what this guy is? I saw him last night and in the dark thought that a snail had lost a shell but clearly not?

Free clean-up crew or get him out of there?

 

[Cell]

Looks like a stomatella. Does it have a small shell on its back?

 

[redfishbluefish]

Agree, stomatella....a good thing.