Animal Stories - People Talking About Livebearing Aquarium Fish


Animal-World info on Mollies
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Lindsey - 2013-01-31
Recently my 20 gallon tank has had a fatal ich outbreak. I have taken care of the tank (disinfected), so that is ok. My only surviving fish was a dalmation molly. He is not currently in the 20 gallon tank but a quarantine tank (1.5 gal.), when I first put him in he did have some ich but it is now gone. My problem is now the molly has these rust coored spots on them. They are in his tail mainly but also on mouth and gill(?) area. I don't think it is some sort of infection though. They shimmer like it might be some new coloration.Does anyone know what it is?

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  • Jeremy Roche - 2013-02-01
    Could just be the molly's color is changing.  environment can do that sometimes.
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Animal-World info on Swordtail Fish
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janj - 2013-01-28
My dead swordtail has a worm by its gills. This is the second time it's happened, what is it please?

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  • Jeremy Roche - 2013-01-28
    Whats the worm look like?
  • Clarice Brough - 2013-01-31
    It sounds like your fish may have had anchor worm. The anchor worm (lernea spp.) is a true parasite that embeds in either the gill or body of a host fish. It can do considerable damage to its host, and it very contageous. This is actually a copepod (crustacean arthropod) rather than a true worm. It looks like a small whip (just a few mm to under an inch in length) with a forked tail. It attaches to the fish with its 'anchor' shaped head.



    For future reference... it is rather stressful for a fish, but the parasite can be carefully removed. Hold the fish on a damp cloth in your hand, then extract it with a pair of household tweezers. Gently press the tweezers as close to the skin as possible, but only extract the worm, not the flesh of the fish. Treat the infected area with an antiseptic (I've used iodine) after removing the parasite. Then return the fish to its tank.
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Animal-World info on Mollies
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Dan Miller - 2013-01-06
My male silver sailfin molly is turning yellowish orange on his face (mostly around the nasal area). Why is this happening?

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  • Jeremy Roche - 2013-01-06
    Mollies, especially the fancier varieties, have a lot of different colors in thier lineage. These genes can get expressed at different times in their lifetime.  Most mollys will have at least some discoloration, i.e. some yellow spots in a mostly black and white dalmation molly, or blue spots. Most likely some great great grandmother was a yellow guppy or something similar, and those genes just haven't been complelely bred.
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Animal-World info on Platies - Moonfish
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Da Funk - 2012-12-31
is it okay to add platys to five gallon tank with betta? the tank already has an algae eater in it.

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  • Jeremy Roche - 2013-01-01
    Can maybe add one, but I really would go with a bigger tank if you really want to add some fish.  Platys are livebearers so there is a good chance if you add a male and a female, babies will soon follow!
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Animal-World info on Mollies
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Anonymous - 2012-12-31
i have one male molly in a community tank, is it okay if i add more males? i really don't want any babies. thank you!

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  • Jeremy Roche - 2013-01-01
    Mollies will usually do just fine with multiple males.
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Animal-World info on Swordtail Fish
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Bonnie Spielman - 2012-12-26
Do the female become infertile when they get older?

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  • Jeremy Roche - 2012-12-26
    Most will either loss fertility or slow down a bit.  A lot depends on health and environment.
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J - 2008-07-22
I'm wondering how people tell if the swordtails are pregnant, since I have 2 males and 3 females.

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  • Margaret - 2012-09-16
    The bellies of pregnant livebearers get very large, just as humans!
  • Jeremy Roche - 2012-09-17
    They will get large and you will be able to see the babies in the back portion of the belly there is a black spot that will expand as they grow!
  • Anonymous - 2012-12-07
    yes u can
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Animal-World info on Mollies
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Rob - 2012-11-30
I have 4 mollies in a tank and 2 of the 4 have almost like a hole in their gill coverings does anyone have any idea what they are? They act fine for the most part they still eat and all but IDK. :{

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Animal-World info on Platies - Moonfish
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Maeve - 2012-05-17
I have recently bought a platy and it was rather fat when I got it but I didn't think much of it. Now it's really, REEAALLY fat. Is she pregnant or have I been over feeding her? I give the fish in my tank 1 small pinch of food a day.

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  • Jeremy Roche - 2012-05-17
    You should be able to see the fry inside. Will be a large black mass inside.
  • Maeve - 2012-05-20
    No, it's just quite pale around her belly. But she is so fat she HAS to be pregnant. She is very shy and hides most of the time. Is that a sign of pregnancy?
  • Maeve - 2012-05-21
    She has a gravid spot so she must be pregnant! It is very dark now!
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Animal-World info on Fancy Guppies
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Hisham - 2012-07-08
I had more than 12 female guppies and 4 males but suddenly all females started dying and were all dead within 2 days. Male Guppies and the other fishes in the tank were not affected. Can anyone explain that, please?

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  • Jeremy Roche - 2012-07-08
    That really doesn't make a lot of sense unless the males are overly harrassing the females.  But you have the proper ratio.
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