I keep a small, 5 gallon filtered tank in which I have kept a blue gourami, a loach, and a suckerfish healthy for nearly 5 years. Last week I went to PetSmart to make a new addition to my aquarium. I chose a dalmatian molly, which I noticed had small orange/red spots on its body when I brought it home. I slowly acclimated it to my tank, but it still behaved oddly and chose to hide all of the time ( I thought it was just shy ). But a week later, I came home to find my suckerfish dead. I emptied my entire tank and washed everything off in hot water before I put my fish back in the tank. Two days after the suckerfish died, I found the new dalmatian molly floating at the top of the tank.. I am wondering if the suckerfish died of old age, or if I brought home a contaminated molly from the pet shop. I can provide photos of the molly if needed. I would just really like to take the proper precautions to keep my other fish safe.
