Hi, I have 10 gallon tropical aquarium. I've had a female lyretail molly in the tank for several months. Yesterday I did a partial water change, and later brought in a new female lyretail molly. The new molly has been chasing my old molly a lot. Today I noticed that the old molly had a limp tail fin, and she seemed to be hovering near the top. Floating up, and then trying to swim back down.
I took the new molly out and put her in a different tank established tank with other fish for the time being. I did a 20% water change a few hours ago, and I've just tested the water.
Ammonia .25 (however, it's ALWAYS been at that level no mater how many times I've tested it - the tank is established)
Nitrite 0
Nitrate 0
Used a liquid testing kit, not the strips.
Those are the only fish in the tank.
Should I be concerned that the new molly has caused disease and take her away from my other fish?!?!
I took the new molly out and put her in a different tank established tank with other fish for the time being. I did a 20% water change a few hours ago, and I've just tested the water.
Ammonia .25 (however, it's ALWAYS been at that level no mater how many times I've tested it - the tank is established)
Nitrite 0
Nitrate 0
Used a liquid testing kit, not the strips.
Those are the only fish in the tank.
Should I be concerned that the new molly has caused disease and take her away from my other fish?!?!
