About 1-2 inches long, mussel or clam? If I touch it, see movement in shell (retracts), very clear shell. 4 yr nano, 24 gallons and watched it grow for last 3 yrs. Does it mean my tank is healthy having this?
Last edited:
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.