angelgurl166

I had just a red tail shark who seemed to hide all the time now i have added 2 bala sharks and now he's attacking them and my tetras which he never used to do i removed him from the tanks because i didn't want him to kill my tetras which he attacking like he would do cause i have had them for 4+ years think if i just gave him time he'd be ok

Annadvn

The RTS (Red Tailed Shark) is territorial and will go for anything with a similar body shape, this will be why he is attacking the bala sharks.

In your aquarium profile it says you have him in a 10g tank with the tetras and bala sharks? If this is correct i would advise you to immediately return the bala sharks as the tank is far to small for them (they grow up to a foot long!) that and the RTS will now be attacking everything in part from the stress of not having space. If you want to keep the RTS and tetras you need to upgrade the tank to ideally a 55g but anything bigger than what you currently have will be an improvement and should help lessen the aggression from the RTS. The 55g gallon is still not really big enough for bala sharks IMO.

Anna

aquarist48

I agree with Anna....10g's is just way to small for the stocking list that you've mentioned.
Too, according to your profile information you are unaware of the nitrogen cycle. Here is a link that can be a great help if your information listed is correct.
http://www.fishlore.com/NitrogenCycle.htm