how to tell the difference between molly and platy

Platy vs Molly Fish: How to Tell Them Apart

Fish lovers, we are here to help! If you’re not a fish expert and have been wondering how to tell the difference between Molly and Platy fish, don’t worry. We are going to go in-depth on the differences between these two types of freshwater fish.

How Can You Tell a molly from a Platy?

Mollies and Platys are two of the more popular breeds of freshwater fish. They come in many different shapes, colors, sizes, and patterns so it can be difficult to tell them apart at times. Mollies have a longer body shape with long fins whereas Platys tend to be short-bodied yet stouter than the Molly variety.

how to tell between a molly and a platy
Molly Fish Has Longer Fins and a Wider Mouth Than a Platy


They also sport larger mouths due to their diet preference for algae rather than plant matter like plants or vegetables that is preferred by most other types of aquarium fishes such as guppies.

The first step is figuring out what type of water your fish lives in. The Molly prefers still or slow-moving waters with some plants for it to explore – that means those living in ponds or aquariums should be Mollies! On the other hand, Platys prefer fast-moving waters with less vegetation – they would live well in places like streams or rivers.

What is a Platy?

The Platy is a small fish found in Central America. They have cousins like Mollies who are both freshwater fishes that live everywhere from the United States to China and Europe, but they’re stouter than their relatives with smaller bodies and long tails.

What is a Platy Fish?
Platies Have Shorter Fins


Platys can come from two different species: southern platyfish or Variatus Platyds fished for commercial purposes around Honduras, Costa Rica, Mexico; these were bred into hybrids by humans which make them available all over the world as pets!

The Southern Platyfish or Variatus Platys are also the only ones that have what is known as a “parr” stage in their life cycle.

Parrs are juvenile fish who look like miniature versions of adults and grow from around 0.75″ to about an inch within a year!

What is a Molly?

Mollies are interesting little fish that has a lot to offer. They’re found in freshwater streams and also coastal water so they can be great for aquariums, but their colors make them stand out as well! These tiny (yet oh-so colorful) creatures originate from South America where there’s plenty of places with good conditions which is why the Mollie has such an adaptable lifestyle.

how to tell the difference between molly and platy


Mollies are known for their bright coloration and have been bred in captivity to produce a variety of different fin types. They’re also one of the few fish that can change from male to female even though they start out as females! This is called protandry and it’s not uncommon for some species who live in harsh conditions such as the Moly to adapt in this way.

This makes them a ton of fun to keep because they’re so different from other fish, with their bright colors and ability to change sexes. They come in every color under the sun!

But as always there are some drawbacks – Mollies have long fins that make them more vulnerable than Platy’s which has shorter ones. And Mollies tend to be somewhat skittish when it comes to handling. They can take a little while to get used to people.

It’s always important for the health of your fish (and other aquatic pets) to make sure that you’re doing everything right with their food, tank environment, and care. With Mollies, it means making sure there is plenty of cover in their tanks so that they have a place to hide and relax.

Do Mollies and Platies Get Along?

Yes, Mollies and Platies can get along well together if they have plenty of space in their tanks. However, Mollies do not like to be out in the open as much as Platy fish do which means that there need to be more hiding places for them (such as plants or other fish tank decorations).

Do molies and platies get along


If you have fin-nippers in your tank, make sure to get Mollies and Platies with shorter fins. Otherwise, they will be constantly attacked by these members of the aquarium community who enjoy a good mealtime.

Mollies also need more oxygen in their tanks. This is because they tend to live on the bottom of a tank and are not as buoyant as Platy fish who love to swim around near the top levels of your aquarium.

As long as you provide them with plenty of space, cover, and sufficient water movement Mollies and Platies will get along fine.

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