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adiumroot 05-28-2009 12:37 PM

Swordtail males' aggression
Now, I've noticed that in the pet stores, multiple males share tanks without any problems. I don't see them chasing each other.

I already have a single male orange swordtail in my pond. Yesterday while going around, I saw some beautiful kohaku pattern (orange and white) swordtails and I bought a male. After introducing him to the pond, the resident swordtail chased him, with occassional nipping. However, the chasing isn't that persistent, since the chaser usually lets up and finds something else to do.

Will the chasing stop when the two guys get used to each other? I think that is the case in the pet stores. Or do male swordtails need to be from the same brood and be together for life to prevent fighting? Oh, and I don't have any female swordtails in my pond, only female mollies and the swordtails pay no attention to them.

Oldman47 05-30-2009 08:03 PM

With no females in the pond, the males will stop chasing each other once they figure out who is the dominant male. If there were females in the pond, it might go on longer because the second or third ranked male would keep trying to move up and gain access to the females.

adiumroot 05-31-2009 03:32 AM

I've noticed that chasing isn't as intense anymore, with one of them chasing the other away but once the other runs, he stops following. He only drives the other one away. The smaller once seems to be more dominant.Well, I bought him first so he's probably claimed the whole place as his territory already. hehe.

Thanks for the information. I was scared at first that the agression might turn really harmful. And it's nice to know it won't.

Swords and Mollies 06-10-2009 11:25 PM

I'm pretty new to this, but I was told mixing male swords is not a very good idea. But it would seem, without females, it should settle down.

adiumroot 06-12-2009 09:06 AM

They've already settled. No more nipping, from what I observe. The dominant one only dashes towards the other one. He doesn't even pursue him all the way.

I was planning to separate them and breed the other one (nice kohaku pattern). But the tank I was supposed to use for breeding just sprung a leak. Bad timing. :o

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