clam? growing on hermit shell

[trinimaddness]

kind of hard to see from the pic. can anyone identify what looks like 2 clams growing on hermit shell? they're getting bigger

 

[trinimaddness]

 

[Jewishreefer1]

View attachment 339348

Bivalve of sorts

 

[trinimaddness]

Bivalve of sorts

Appreciate it, I'll keep an eye on them.

 

[Jewishreefer1]

Appreciate it, I'll keep an eye on them.

They’re great for filter feeding, they’ll do the tank good and they’re pretty cool to have

 

[trinimaddness]

Getting bigger. Pretty cool. It's attached to a hermit shell so it moves around often.

 

[trinimaddness]

I have the same in mine.

How big are they? They're starting to look like oysters