Hi All~

I lost one of my Serpae Tetras last night. Not sure why. I immediately tested my water this morning and all is good there (ammo - 0, trites - 0, trates - 0, pH - 7.8) The rest of the fish are all actively swimming around and behaving normally.

I did notice this fish yesterday hanging low at the bottom away from the rest of the fish.

What else should I check for??