I’ve had this clam for 5 years now. I’ve grown it from 3 inches I’d say and have had it in 3 different tanks. It’s always been bullet proof for a clam. I’ve noticed it hasn’t looked very good the past few days and today it’s bad. No clue what’s going on. I’ve had some issues with this tank (8 months old) but as of lately it’s been turning around and now this.. so frustrating. Pics are from 5 years ago, 3 weeks ago, and today.