Suddenly agressive platy...
Hi! I could use some advice here as I am a novice to fish keeping...
I have a 14 gallon freshwater tank with 2 platies, two guppies, a snail, and one guppy fry (in a breeders net). I've gotten through the rough start and nitro cycle and seem to have everything going swimmingly as far as feeding, temps, and ammonia/nitrate levels. The fish up to now have also gotten along well with no issues...the platies have been together since December and the guppies were introduced in February.
However, in the last two days my male platy has been roughing up what I think are the female platy and guppies (I am guessing gender based on the bottom fins being more fanned than pointed...and the platy is black so I can't see any gravid spots). He seems to leave the other guppy be...and although I think my fry is large enough to leave the breeder net I am keeping him there until I get this aggressive behavior under control.
I can't see what may have changed in the tank to instill this hostility but he is really chewing their tail fins up and has them both, particularly the platy, in hiding rather than swimming about. For the moment I have pulled him out and put him into a small goldfish bowl until I can figure out what else to do...I am afraid he will stress the other two to death if I leave him in the tank.
Any ideas on why the sudden change and how I can reintroduce him?
Well you should always have 2 females for every 1 male when it comes to livebearers, including Platies. It helps to spread the aggression out so the male isn't always chasing one female around to mate with her.
It's strange that the male platy is just becoming aggressive now. I would get another 1 or 2 female Platies and see if that helps. You have the room in your tank for a couple more.
When I first had Platies I had 2 males and 1 female since I didn't know the "rule". After a couple weeks I noticed how aggressive the males were towards the females so I bought more females. Now I have 3 females and 1 male and the females seem to pick on the lone male LOL.
Just like people fish can go bad too, this might be something permanent or something you can control. I've seen people talk about moving decorations and plants around to create a new environment. But it may just come down to accepting you have a bad fish. and will have to keep him separate(tank divider), find a new home with no fish small enough to pick on or the worse...
is it a girl play? figures...
Or stick him in the breeder net...at least then he's in a filtered tank until you can figure out what to do with him.
I agree with the more female suggestion...and I agree with the bad fish suggestion...I have had both issues in the past.
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