Black Molly with white around scales

Herefishiefishiefishie

I had a black molly unexpectedly die earlier this week. I also had an oto die three weeks ago without any obvious cause. I couldn't see anything obviously wrong with the black molly and the water parameters are good and stable. I went to feed the fish and the little guy was hiding under a plant not moving. The only thing I could think of was fin rot. I have 4 mollies and they're a bit nippy (1 male and 3 females - now just females).

At any rate, I started treating the tank with Melafix just in case. Now one of the three remaining mollies has been hanging out at the bottom most of the time, although she pops right up when it's feeding time. She has some white around her scales. It doesn't look fuzzy to me.

It's a 20 gallon tank. Planted and cycled with 2 Otos, 3 black mollies (plus one 2-week old black molly fry), and 3 sunburst wag platies.

What's wrong with her? I don't want to lose her. Thanks!
 

Attachments

  • 20210820_205905.jpg
    20210820_205905.jpg
    111.5 KB · Views: 28
  • 20210820_205029.jpg
    20210820_205029.jpg
    155.1 KB · Views: 32
  • 20210820_184310.jpg
    20210820_184310.jpg
    147.8 KB · Views: 31
  • 20210820_184244.jpg
    20210820_184244.jpg
    130 KB · Views: 30
  • 20210820_184004.jpg
    20210820_184004.jpg
    130.7 KB · Views: 28
  • 20210820_184003.jpg
    20210820_184003.jpg
    122.4 KB · Views: 30

Initiate

Hey,
Fin rot, in my experience, doesn't cause lethargy so I doubt its that and none of the other fish show signs of fin rot from what I can see. I've never kept mollies before but I can see the difference between the fish with the white between its scale and those without it. However, I'm not sure that melafix is the best thing to be using, its got a reputation of being somewhat ineffective against many things it is supposed to treat. Moreover, it can be harmful for some more sensitive fish like the otocinculus.

I wouldn't link the death of the otocinculus to any kind of disease at this point either, they can be very sensitive to changes in their environment especially if they haven't been in the tank for a while.
 

Similar Aquarium Threads

Replies
2
Views
218
zSatori
Replies
1
Views
49
BigManAquatics
Replies
4
Views
94
DuaneV
Replies
6
Views
241
grac3
Replies
2
Views
61
jinisjohn78

Random Great Thread

Latest Aquarium Threads

Top Bottom