Larger aquarium = less agression?

[ethnics]

im jus wondering if the size of a tank can be one of the main reasons people have problems having fish co-exist together. i would only think it would make sense that in a tiny tank, they can't really run n hide or leave the area to keep the other fish from chasing it because as soon as it runs, its at the other side n has to turn around to keep running. but if its a huge tank, theres to much space to become territorial of and would result in less agression towards eachother if there was even any at all? any input on this subject guys?

my main reason for this question is i have 2 silvers, 1 rtgg, 1 jardini, 3 gars all in a 150gal tank as of right now. there's SOME agression but nothing dramatic, few split fins but no hardcore battle scars. but im wondering if them being in a big enough area would lessen them fighting. seems it would make sense, jus tryin to clarify incase im overlooking the situation. thanks mfk

 

[RedDevilDon2005]

i would think so. smaller tanks really dont have any room for territories.

 

[toehead11183]

 

[Eupterus]

Unless you get bigger fish..then you'd be back to square one right?.

 

[ethnics]

Unless you get bigger fish..then you'd be back to square one right?.

well i bought the tank for bigger fish, n the bigger fish are in a 150 as of now with some agression but nothing dramatic. will i see a decrease in agression when they move? or is it gonna be the same?

 

[RedDevilDon2005]

i would say less aggresion, more room means everyones not in the way of each other. u have a lot of surface dwellers. you should see a differnce

 

[HarleyK]

Howdy,

That theory hold true for some but not all species. To start small: My Macropodus opercularis and also Trichogaster trichopterus were quite aggressive in smaller tanks (20 gal). Once I moved them into 80+ gal tanks they were fine and peaceful. With other fish, like Hoplias malabaricus, it doesn't matter what size tank you house them in. Most specimen will remain aggressive and destroy tankmates even of considerable size.

HarleyK

 

[cichlaguapote]

Yep depends on fish. Some aggressive fish are cohabable together given a big enough tank. For some that means 100g and for others it means thousands of gallons. But there are some fish that no matter the tank size don't like other fish.

 

[Miguel]

but it is a mater of course that with more space fish have less stress and feel less confined..this leads, obviously, to less agression, be it a hoplias or a shark...

 

[smmfish]

I used to keep both my Oscars together in a 55 gallon when they were babies, when they hit 4" I had to seperate them. They lived peacefully in their own 55 gallons until I decided to buy a 125 gallon tank. I set the tank up and put them back together again and all is fine. I really thought I would have some trouble, but none what so ever.
For most species the aggression will lessen the larger the tank is.