Tank Will Be Overcrowded

[PuckDog]

My tank is a 20 gallon with sand, an air pump with stone and bubbler, Marineland Penguin 150 biowheel filter, thermometer, and a heater. The ammonia is 0.05ppm and I know that that is not good. I think that when my fish get larger the tank will be overcrowded. I need to know what I can do to make the best of this situation. The fish I have are 1 Pictus Catfish, 2 Rainbow Shark, 2 Albino Rainbow Shark, 2 Tiger Barbs, 1 Green Tiger Barb, and 1 Bumblebee Catfish. I would like to know what to do in this situation and what a better stocking for my tank might be.

 

[looking-glass]

I would definitely consider re-homing the sharks and the catfish as they will soon outgrow the tank and the Ammonia levels could be due to the over stocking .
 
the tiger barbs should be ok maybe add more to make a group of them and stick to similar schooling species.
 
In addition to this as a centerpiece fish that is slightly larger maybe look at something like dwarf gouramis, a ram or keyhole cichlids  

 

[Ninjouzata]

Upgrade or re-home. Or both.
 
You want a 55g minimum for A shark, I think. They get quite territorial as they age and especially don't like conspecifics. Bottom dwellers such as corydoras can also be in danger since they occupy the same space.
 
The tiger barbs should be kept in groups of 6+, and a 20g long might be okay but honestly think they should be in a 30g tank.
 
The bumblebee catfish...can you get a picture? There are a few fish that have this name IIRC. One is the south american bumblebee which I think gets 3" and likes to be kept in groups.
The other is the asian bumblebee catfish which gets 6" and I'm not sure if it likes groups or not
 
The pictus catfish..HERE is some info on it's requirements. Apparently you'd want something like a 67g since it's quite active. They should also be kept in groups.
 
Since you have ammonia I'm guessing you didn't cycle the tank? If you don't know what cycling is have a read of THIS.
I'd personally return all of them and cycle the tank fishless. People here can help you put together a stocking list appropriate for this size tank.
 

to TFF btw! Hope you enjoy it here. Sorry for being a bit negative.

 

[attibones]

Upgrade or re-home. Or both.
 
You want a 55g minimum for A shark, I think. They get quite territorial as they age and especially don't like conspecifics. Bottom dwellers such as corydoras can also be in danger since they occupy the same space.
 
The tiger barbs should be kept in groups of 6+, and a 20g long might be okay but honestly think they should be in a 30g tank.
 
The bumblebee catfish...can you get a picture? There are a few fish that have this name IIRC. One is the south american bumblebee which I think gets 3" and likes to be kept in groups.
The other is the asian bumblebee catfish which gets 6" and I'm not sure if it likes groups or not

 
The pictus catfish..HERE is some info on it's requirements. Apparently you'd want something like a 67g since it's quite active. They should also be kept in groups.
 
Since you have ammonia I'm guessing you didn't cycle the tank? If you don't know what cycling is have a read of THIS.
I'd personally return all of them and cycle the tank fishless. People here can help you put together a stocking list appropriate for this size tank.
 

to TFF btw! Hope you enjoy it here. Sorry for being a bit negative.

I second everything she just said. I've also heard, but have no experience to back this up, that the pictus can be aggressive. I also believe that tiger barbs need much larger tanks because they can be very nippy and need the larger numbers to ease the issues which come with this species.