Black Molly Quarantine

Humblefish

Dr. Fish
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Navarre, FL
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Here’s another question. Locally my use of mollies has been getting noticed and I had someone ask me this past weekend what I’d do with his situation: A guy with a frag table (8x4) and about 5 tangs in it. Says he’s never seen them with ich or shown signs of ich, but doesn’t want to pull them out to QT them for stress and algae reasons. I suggested he acclimate some mollies and put them in the sump (not sure how tangs would tolerate mollies?), if they don’t show anything after 4 weeks, consider the tank clean for ich.

Sound reasonable?
Sounds reasonable to me. Isolating black mollies away from more aggressive fish (like tangs) is always a good idea.
 

Kyl

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I think four weeks is good enough, especially, if to be believed, the tangs haven't visibly shown anything. I know one is a powder blue, so I'm wondering if he just got lucky with all those purchases. That's some luck if so heh.
 
@Humblefish

I’ve been having a really hard time sourcing black mollies locally. Been looking for a couple weeks. I finally found one medium sized and have been drip acclimating for two days. I’m going to add him to an acclimation box.

I know multiples are preferred but I just haven’t found them. Will one work or does it HAVE to be multiples?

My general plan is to leave him in for a month. Anything pops up all fish go to full copper QT. But if no symptoms arise I think I’m still going to put my fish through Prazi Pro just to rule out flukes. Seem reasonable?
 
Multiples are preferred so you have more than one "guinea pig" to watch, but just using 1 should be fine as well. (y)
Humble if I may one other question just to confirm my logic.

I’m black molly testing my nano reef prior to moving my old fish into my new large DT. The nano reef is over two years old and I’ve had all these fish a minimum of 10 months and never seen any sign of diseases. That being the case I’ve likely avoided any catastrophic diseases like velvet, brook, uronema correct? So most likely if there is anything in there it would be ich or flukes?

Is there anything else that would’ve gone that long a period of time without showing symptoms I should watch out for?

Thanks as always.
 

Humblefish

Dr. Fish
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Navarre, FL
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I’m black molly testing my nano reef prior to moving my old fish into my new large DT. The nano reef is over two years old and I’ve had all these fish a minimum of 10 months and never seen any sign of diseases. That being the case I’ve likely avoided any catastrophic diseases like velvet, brook, uronema correct? So most likely if there is anything in there it would be ich or flukes?

Is there anything else that would’ve gone that long a period of time without showing symptoms I should watch out for?
Ich would be my #1 concern. With flukes, you almost always see behavioral symptoms (scratching, yawning, head twitching) and the fish eventually will succumb to it.
 
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@Humblefish or anyone else that can help. So I've had this black molly in my nano for two weeks now. Today is the first time I've noticed anything on him. I apologize if the pics and videos are bad. I can barely see it with the naked eyes so trying to capture it has been very challenging. It's one single spot but I really can't tell if it's ich, something attached to it's mucus, or just nothing but scale defect. Any thoughts on if this is ich? Thank you.

If this is ich will become readily apparent?
 

mattzang

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They’re at 1.025! So which ones are males? The triangular anal fin?
I think I’m gonna put the orange one and an opposite sex one in my dt, one in with my cbb and potters angel, then the rest in my observation tank I guess. I wonder if a moyers wrasse would eat tiny mollies 🤔
 

mattzang

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@mattzang

This applies to all livebearing freshwater fish:

View attachment 5510
awesome! guess i should've just googled lol, i always forget how much more information there is out there on freshwater fish

looks like my orange one was the only male, so he and one of the black females are in the DT now! kinda looks like they're struggling a bit with the flow tho. yikes. my flow is turned way down right now too, might have to fish them out eventually when i start getting sps and cranking up the flow
 
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