I've had two nerite snails for over a year now, they're great at their job. No problems. I'm concerned that one has recently developed this white rim between it's shell and body. Do I need to be concerned?! I've attached a couple of photos.
Nothing has changed in the tank. Levels appear fine...
Is this normal?
I have one shrimp who keeps eating the sinking pellet food I drop in for my cories, and is so protective over it that it has a go at any fish that tries to eat it. The shrimp actually drags the pellet away to a hiding place! Quite clever tbh. But there are other fish who make an...