Difference between Platy and Molly
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Old 11-08-2011, 02:10 AM   #1
WingoAgency
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Difference between Platy and Molly


Please describe what you know of or think the difference/similarities between platy and mollies.


I go first with

1)They are both live bearers
2)They look kind of similar in shape
3)They are constantly having fun and poping babies

now your turn
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Old 11-08-2011, 02:18 AM   #2
10gallonplanted
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Mollies are a little bit bigger, and mollies seem to have more shapes. Other than that, they seem the same.
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Old 11-08-2011, 02:32 AM   #3
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Mollies and platies are very similar. Mollies get bigger. Sexing on Mollies is way easier. Platies, and Swordtails can interbreed among each other. IMO platies are hardier and breed faster.


P.S. Swordtails are better! ;D
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Old 11-08-2011, 04:13 AM   #4
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Platies tend to have shorter body's rounder bodies. The mollie is a longer sleek fish. Mollies were the fish fish I ever kept back 13 years ago. They are fun fish.
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Old 11-08-2011, 04:19 AM   #5
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Other then what is mentioned above, platies are soley freshwater fish, while mollies are brackish (but have been adapted to freshwater).
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Old 11-08-2011, 07:23 PM   #6
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Mollies will pick at little algaes on decorations.

Platies use the decoration to hide out and boom-chicka-wow-wow.
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Old 11-08-2011, 09:27 PM   #7
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I found mollies far more difficult to keep back when I lived in Florida and my water was liquid rock. My platies thrived whereas I could never keep mollies healthy. I'm not sure if this is typical but I've steered clear of mollies since then.
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Old 11-08-2011, 09:29 PM   #8
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Default Platy and Molly

Hello Wing...

I'll take the comparison a little further. I keep large tanks of Fancy Guppies and have read a little on "Livebearers" in general. All will do well with a little standard aquarium salt in the water. A teaspoon per every five gallons of your water change water is sufficient. I've been using aquarium salt in my Guppy tanks for a number years with good results.

Platys are much hardier. Mollys aren't as tolerant of mistakes in tank management. They're very picky about water conditions, like water temperature and also diet.

If you keep Platys, you can skip a water change every so often, but you'd better get used to weekly water changes of at least 50 percent with Mollys. Maybe we need to be doing large, weekly water changes anyway. That's what I do.

Mollys are also very senative to cramped tanks. A pair of Mollys are fine in a small 20 G, but if you keep other fish with them, a 50 G minimum is needed.

Can't recall anything else. Hope this info. is helpful.

B
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Old 11-08-2011, 11:16 PM   #9
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Quote:
Originally Posted by BBradbury View Post
Hello Wing...

I'll take the comparison a little further. I keep large tanks of Fancy Guppies and have read a little on "Livebearers" in general. All will do well with a little standard aquarium salt in the water. A teaspoon per every five gallons of your water change water is sufficient. I've been using aquarium salt in my Guppy tanks for a number years with good results.

Platys are much hardier. Mollys aren't as tolerant of mistakes in tank management. They're very picky about water conditions, like water temperature and also diet.

If you keep Platys, you can skip a water change every so often, but you'd better get used to weekly water changes of at least 50 percent with Mollys. Maybe we need to be doing large, weekly water changes anyway. That's what I do.

Mollys are also very senative to cramped tanks. A pair of Mollys are fine in a small 20 G, but if you keep other fish with them, a 50 G minimum is needed.

Can't recall anything else. Hope this info. is helpful.

B
Good afternoon, B...

Mollies are actually quite hardy, in fact they are one of few aquarium fish that can easily go from full fresh to full salt. Mollies are probably more hardy than platies simply because they can regulate their internal organs to take in and expel chemicals. 10 pairs in a 20 would be sufficient with a little room for babies to be born. While using aquarium salt is okay, I would not reccomend willy nilly in case of an overdose and the fact that the TDS would fluctuate.

D
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Old 11-08-2011, 11:35 PM   #10
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As someone who has messed around with live bearers for years, I've never had a problem with Mollies being finicky, and certainly never needed 50 gallons to keep more than 2 or had to do water changes every week.

I'm not sure where that is coming from, I've never heard that before, and it certainly doesn't match my experience.

The two things to watch out for with mollies:
1. They don't like high nitrates. A few live plants in the tank help keep Nitrates in check.
2. They like hard water with a high PH.

As long as you are doing those two things, they should be fine. Some species require a little salt in the water (Black mollies tend to have skin issues without salt), some are fine without it.

Note: This is in regard to your "normal" mollies and balloon mollies. I have never kept Sailfin Mollies, which are much larger than "normal" mollies.

I've always had good luck with mollies and platies. Guppies on the other hand have given me issues.
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Old 11-08-2011, 11:49 PM   #11
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I have had lots of mollies in the past. I even had a few in my reef tank at one time. Never had any trouble with them dying or not breeding. On the other hand, I could never keep platys alive. Until just this year they always died on me. I have seven Mickey Mouse Platys now and they have been alive 6 months or more. That's a record.
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Old 11-09-2011, 02:04 AM   #12
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I have found that mollies are not as timid as some platys. They both breed very easily but for some reason my young platys get pregnant too young sometimes which causes them to get sick after birth. Also I strongly recommend aquarium salt when keeping mollys. The aquarium salt tends to give the fish a better chance of staying healthy. Both are great fish but if I had to pick between a molly or a platy I would pick molly hands down because of there curious nature. Mollys love to peck at sinking algae wafers and it's fun to watch.
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Old 11-09-2011, 04:01 PM   #13
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Funny how different our experiences are. I was an accidental serial killer of not only the mollies I talked about but guppies also. In heavily planted tanks with liquid rock for water and big water changes each week. Tried the salt trick too.

I finally stopped buying them all out of mercy for the fishies. My house was fishy death row.

Anyway, I've recently fallen in love with livebearers all over again and am putting platies in my 75g. They're so colorful and peaceful. I love them!
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Old 11-12-2011, 07:37 PM   #14
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I found the babies of the mollies grow faster than the platy by far.
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Old 11-13-2011, 01:00 PM   #15
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I find mollies to be pretty hardy as well. Right now, I'm keeping wild sailfin mollies in my 30g planted tank as well as a Rubbermaid tub on the back patio. They breed constantly, the males are relentless.

Fry survive much better in my densely planted (packed with guppy grass and milfoil) outside tub. For most of the summer, I fed lightly once a day and pretty much left the tub alone.

Off topic but if you want hardy, try mosquito fish. Those things bred like crazy in the tub for 2 months with no supplemental feeding. The tub is covered too.
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