What's this on the glass?

[U4ia]

New tank with rock from friends tank. New to all of this and just be patient/cautious. Have had the tank running fora few weeks and today saw this on my glass.

Any ideas?

 

[shakacuz]

any tank inhabitants? any real live rock?

 

[U4ia]

any tank inhabitants? any real live rock?

The tank was set up with caribesea live sand and live rock from someone else's, seemingly, healthy tank. The rock has some kind of greenish algae and some fairy dusters. Water testing over the couple weeks has been fine low ph but otherwise good. I've really just been running it as it is to get the water right and make sure temperature and circulation is good before putting anything else into it.

 

[brmc1985]

Doesn’t look like a flatworm. Maybe very small limpet? Can you take it out of the tank and take a picture of the top? Is it hard or soft? That’s what she said.

 

[WheatToast]

It looks like a harmless, algae-grazing limpet or chiton. A closeup picture of the animal's dorsal side (not facing the glass) would help with a better ID.

 

[shakacuz]

It looks like a harmless, algae-grazing limpet or chiton. A closeup picture of the animal's dorsal side (not facing the glass) would help with a better ID.

i concur with chiton ID. could also be a limpet!