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Are Mollies aggressive?

By: Eric RothUpdated: January 01, 2021


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    June 26, 2022
Mollies are not very aggressive, but can protect themselves, so they are suitable tank mates for almost all tropical community tank fish. Mollies, like Guppies, can be acclimated to full strength sea water.

People also ask, what do molly fish like?

Mollies are considered omnivores. You should generally feed them a varied diet with high-quality flake food and many vegetables because they consume algae and plants in their natural habitat. Frozen food is also great for mollies though, as far as live food, they prefer daphnia, brine shrimp, and bloodworms.

How many mollies should be kept together?

Keeping Molly Fish Together
You should keep them in groups of at least four or more, they naturally stick together. The group should be made of mostly females since males are known to harass them.

What eats common Molly?

Molly Facts
Kingdom: Five groups that classify all living things Animalia
Average Clutch Size: The average number of eggs laid at once 80
Main Prey: The food that the animal gains energy from Algae, Insects, Bloodworm
Predators: Other animals that hunt and eat the animal Large Fish, Birds, Reptiles

Why do molly fish lay on rocks?

Swim bladder function
When the swim bladder malfunctions, the fish has trouble maintaining his level in the water and can sink to the bottom of the tank or be stuck near the top. The abnormal ballast can cause the fish to turn sidewise and swim on his side, or even roll entirely upside down.


Do Mollies sleep on bottom of tank?

Fish will sleep between 9-12 hours a night normally near or at the bottom of the tank. Some will move their tail to keep oxygen moving through their gills but it's pretty easy to tell the difference between a fish that stressed and a fish that is tired and trying to snooze if you examine them and know their routine.

Will Mollies kill guppies?

Guppies and mollies can interbreed, so it is possible that you are witnessing mating battles. Mollies are much bigger than guppies, so when the molly attacks the guppy he is able to kill the rival guppy and go on with his day.

Do molly fish kill other fish?

Molly fish aren't that aggressive for the most part.
The only way I could see a molly killing other fish is if it had a really long time to bully that fish to high stress levels. The males can get pretty aggressive when they are wanting to breed with females and chase and fin nip.

How many Mollies Can I put in a 10 gallon tank?

if you want medium size mollies and want to mate them. And to keep them healthy i advice you should keep 4 mollies in your 10 gallon tank.

Why did my Molly died suddenly?

Diseases & Parasites
Ich, fin rot, flukes, and velvet disease are just some of the molly fish diseases that can cause early death in your fish if they're left untreated. Research the diseases that can affect mollies and the remedies for these diseases, so you can spot, treat and prevent them from killing your fish.

Why do my mollies chasing each other?

Yes it's normal, it could be that they are breeding too. Mollies sometimes chase and attack other mollies while feeding but they will not cause that much harm. However if you have a tank too small and the fish getting bullied is not getting any food at all -> It might die from stress and sickness.

Why is my molly fish laying on the bottom of the tank?

Swim bladder function
The bladder contains gas, including oxygen, that lets the fish float upright at the desired depth. When the swim bladder malfunctions, the fish has trouble maintaining his level in the water and can sink to the bottom of the tank or be stuck near the top.

Do Mollies sleep?

The simple answer is yes! They are sleeping, and they can sleep at any time during the day or night. Fish do sleep with their eyes open, because they don't have eyelids (except for some sharks) to close!

Should I separate pregnant Molly?

When you have a pregnant Molly, you do need to separate them from the rest of your fish. Because Mollies are live-bearing, other fish may think the babies are food. If mollies give birth in the tank, there is a good chance other fish or the mother eats the fry.

Can mollies breed with guppies?

Guppies and mollies can interbreed, with the offspring being called muppies.

Do Mollies eat their babies?

Mollies belong to a class of fish called livebearers. They don't lay eggs; their young come out swimming. Molly babies get no protection from their parents. The tiny fish are just as likely to be eaten by their own mother as they are by other fish in the aquarium, so to survive they're going to need a little help.

Do Mollies fin nip?

Yes, Molly's can be fin nippers at times. Personally I would recommend moving the Gold Fish to it's own tank if possible. Simply due to the fact that Gold Fish are "cool" water species and Molly's are tropical.

How many Mollies Can I put in a 5 gallon tank?

Mollies, about two or three, would do weel in a 5 gallon. If you want live bearers, get, mollies, guppies, endlers, platies, tetras, etc. You could put in a single betta if you wanted.