Will Larger Bala Shark Kill Smaller Bala Shark?

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nikm128

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Ok so I'm just gonna give you all the rundown on how I got to this point really quick, then get to the question.
I started out with three bala sharks, one of which did not last very long for unknown reasons but I honestly don't remember why I didn't go get another. Then fast forward a few months another one died by jumping out of the tank during feeding and landing in high pile carpet. So now I have just one 6-7" bala which I know needs friends.
So here's the question. Will a half size bala kill any lfs size (~3") bala I try to add?
 

Mrfister1116

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Sometimes, the temperament varies in them and I’ve read can be territorial based. As with most fish they tend to pick on any smaller ones though. I’d get the closest in size Bala you can find
 
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nikm128

nikm128

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I think the current one is pretty peaceful considering a red tail shark will chase him sometimes and not have anything happen to it. I don't know where I could buy any close to ~6" though
 

Coptapia

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They’re a shoaling fish so should only be kept in groups of (6) or more.
Trouble with most shoaling fish, including Silver Sharks, is if you only have two one will probably bully the other. You really need a few... and they grow over a foot long and need swimming room, so you need a huge tank. They shouldn’t actually be sold for home aquaria in most cases.
 
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nikm128

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I have the proper amount of space for them, I just need to find some that won't be killed by the one on its own at the moment since they need groups. I also need to know what risk there is if any for adding ones half his size
 

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It should be fine if you add a few and there’s enough space. It’ll probably love it and shoal with them. Just don’t add one, of any size, and two is often risky aswell. Once they settle whoever’s biggest will bully the other/s, very possibly.

That “group feeling” is the thing. Give him that and he’ll be ‘happy’. Size usually doesn’t matter then.
 
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nikm128

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Well I think making him more comfortable does slightly outweigh the risk of squabbles. As long as they're not likely to kill each other I can manage it.
 

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They’re a very peaceful fish. It’s just the stress of not being in a group can make them aggressive.
 
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nikm128

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Well in that case I'm not really that worried, I've always been told they're semi aggressive or aggressive fish, just like they're sold as.
Thanks for clearing that up for me
 

Coptapia

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They might have the odd argument between themselves but it’s never harmful.
They are often sold as aggressive but that’s because they’re often (usually) kept in numbers that are too small, or too small a tank, or in the wrong type of tank, eg with cichlids or maybe something nocturnal that disturbs them, all in a tank where they can’t get out of the way. All of this causes stress so they don’t behave normally. That’s the aggression.
Same with most shoaling fish.
 

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Ok, that's good. Is 20" wide too narrow for them?
IMO that’s a bit narrow, but 6ft x 20” will give you a happy peaceful group. They just won’t grow to quite their full potential. They’re very active and powerful swimmers, they just won’t be able to do much of that.
Basically it’s enough but not ideal long term, imo.
 
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Jafa

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My rescue Bala apparently killed his smaller mate (fits what Coptopia says).
In his 35g cube he was... 'twitchy' and nervous as heck. I had been going to rehome him asap.
I moved him to my 90g community tank (he was scaring the Frontosa) and he is now a lamb.
He feeds with the gouramis, angels and corys and even comes to me for blood worms (who wouldn't)
I will still rehome him (Do you want him? Come on over ) but the size of the tank makes a big difference to his attitude.
...and maybe the lower ph
 
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nikm128

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IMO that’s a bit narrow, but 6ft x 20” will give you a happy peaceful group. They just won’t grow to quite their full potential. They’re very active and powerful swimmers, they just won’t be able to do much of that.
Basically it’s enough but not ideal long term, imo.
Don't they grow to ~14"? That would give 5-6 inches of extra space wouldn't it?
 
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nikm128

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My rescue Bala apparently killed his smaller mate (fits what Coptopia says).
In his 35g cube he was... 'twitchy' and nervous as heck. I had been going to rehome him asap.
I moved him to my 90g community tank (he was scaring the Frontosa) and he is now a lamb.
He feeds with the gouramis, angels and corys and even comes to me for blood worms (who wouldn't)
I will still rehome him (Do you want him? Come on over ) but the size of the tank makes a big difference to his attitude.
...and maybe the lower ph
How big?

Which is less than half the length of their full grown body.

Edit...a 125g isnt horrible. Dont get me wrong. I was just putting it in perspective.
The tank was built by me, so I'm still in the process of touching it up and stuff. That said it would be a royal pain in the butt, but I could make it a few inches wider. What width do you recommend?
 
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