Hitchhiker Flame Scallop... how has it stayed alive so long?!

[atlantean]

I found a little flame scallop wedged in a hole of my live rock. He has to have been living in my 20 gallon tank for 9 months. All I can say is, "What on earth?!" Maybe I should get another?

 

[DrZoidburg]

I found a little flame scallop wedged in a hole of my live rock. He has to have been living in my 20 gallon tank for 9 months. All I can say is, "What on earth?!" Maybe I should get another?

Maybe something like other clams. Where smaller ones do better or vice versa. Also with the right feeding/environment. IDK never owned flame scallop.

 

[atlantean]

I also have what seem to be little jewel box clams reproducing around the tank. There must be some sort of consistent planktonic food. I wouldn’t think there would be enough natural food in a 20 gallon tank though.