Male Mollies Fighting, What To Do

Hello again everyone!

I have a 25 gallon tank with
10 harlequins
6 male guppies
6 corydoras
3 ottos
2 fully grown female mollies
3 female molly fry (5 mts old approx)
2 male molly fry (one of them is deffo 5 mts old but I bought one from a pet shop so am not sure exactly how old he is)

Anyway, one of my black male molly fry (not so much fry anymore but still a juvinile) has been chasing the females, which I know is normal behaviour and they have been okay, not really bothered by it, but now, my dalmation male molly fry who was never bothered by the black molly is now really fighting with him. They swim in circles attacking each other.... this only started last night, and when I turned off the lights it stopped. However, since this happened, my black molly has been hiding in the trees, with his tail in a downward way and I'm scared that they have really hurt each other. I have another 40 litre to move him to, which just has female guppies and their fry in, and also the fry that was dropped from one of the female mollies in the 25g, but I don't really want the tank to be overrun with more pregnant guppies....

I have a 55 gallon that is going to be set up in around 4 months when I move but I don't know what to do for the time being. I'm sure it is just the dalmation molly wanting to be the dominant male in the tank but I don't want them to end up killing each other.....

I also have a betta tank which is 6 gallons with him just in there, but I don't think I should move him to there either.....

Can someone please HELP.....

I don't know what the best option is?

 

You do not have enough female mollies.

You want a min ratio of 3 females to each male. I have a 4:1 in the 150 molly aquarium.

 

I have more mollies in my baby tank which are a month old today, I am pretty sure some of them are going to be female, but when will it be safe to move them over to the 25g?

I don't want to buy anymore female mollies as I have 7 one month old babies and that is too many already.....

I have 5 females to 2 males right now, I will hopefully be able to add the other mollies soon?

when would you advise to add the 1 month old mollies?

 

As soon as they are too big to fit in the mouth.

 

will they not chase them and try to pester them?

 

25 Gallon with that many fish? Your problem is your tank is too small. They are fighting for what little territory is available in the tank. Even a 55 isn't going to be enough for all you have. Your Betta will destroy a male Molly, do not put him there. I would look into a 75 Gallon, or more. Otherwise you'll need to re-home fish. You're already setup for disaster having live bearers like Molly's, without multiple tanks, or a source to re-home them. They breed like rabbits.

 

I have 4 tanks, all of which mollies can be put into, when I move I am planning on keeping both the 25g, and the 55 gallon running so that I will have room for all of the mollies. Just to add there is plenty of room for all of the fish. I have never had a problem before. The molly are still fry so do not take up loads of room. Also I have 2 filters and do regular water changes, I am not a beginner to this and know what I am doing.

 

Hi
Would just like to point out that Guppies and Mollies can and will interbreed. The result of this coupling is not great. Just a thought.

 

When my mollies start to fight like that I just quarantine the one who is being the most aggressive and redecorate the tank with the light off then put the mean one back in the main tank. It makes the fish think they're in a new tank. Works really well for me since mollies usually get territorial and start fighting over a certain spot in the tank.