Tiger Barbs fighting eachother

Gunn

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Feb 5, 2004
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Kelowna, BC
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Hi, I'm new to the site and new to the hobby, but have been reading this site for about a month now trying to learn as much as I can. I've researched a lot before starting, and am trying my best to start slow in order to try and encounter the least amount of problems.

The question I have is regarding my Tiger Barbs. Here is what my tank contains (I've had it for 2 weeks now):

Original purchase:
20g tank
2 tiger barbs
2 orange platies
2 australian.. umm... forget the exact name, but they have yellow tails, and are larger than the average community fish.

Since then I have added a few others, as my tank was pretty empty with only 6 small fish:
1 week later:
2 tiger barbs
2 silver tipped orange fish. haha sorry i can't recall their exact name

then one of the Tiger barbs died. It was one of the newly added barbs. Bought them on a friday, it died on the monday. I watched them closely, and because both the new tiger barbs had distinguishing markings, I can tell them apart from the orignal barbs i purchased. The original barbs (one in specific) harasses the new barbs constantly... he chases them non-stop. Basically, he did this until this one died. He is slightly... and I mean just slightly bigger than the others. Now the second new barb is feeling the same effects as the one that died. It is chased constantly and now it never moves until it's being chased... it's constantly in hiding. (One thing I Need to add is more plants, as there aren't many in my tank - 4 semi-large plastic plants and a sunken car - i'll post a pic at the bottom of the post).

I'm at work now and I have a feeling when I get home this other barb will have died as well. I've also noticed this barb has begun chasing the other original barb as well. I'm not sure what to do. He's not extremely aggressive... as in he doesn't really attack, just chases until the other barb stops and hides. I really like tiger barbs but am afraid each one I buy is going to be killed by this controlling barb. I've considered buying a larger barb to teach him a lesson, but haha, I want to look at other options first.

I know barbs can be semi-aggressive with their own kind, but I've never heard of them killing in a fashion like this. And these are small barbs, too. They are definitely no where near full-grown and neither is this guy.

Anyways, sorry for such a long post, and I'm looking forward to learning more, as I can see there are a lot of very "fish-smart" people on this board. The info I've already obtained from this site in a few short weeks had helped me tremedously. I basically knew nothing a few weeks, and like to think I know a decent amount for someone who's been in the hobby for 2 weeks :)
 
Oh, in addition, yesterday I added 2 irredecent sharks to the mix. I love these lil' guys :)

Edit: Oh, and here is a picture of my tank. The pic was taken the day I purchased it, so only 6 fish were in the tank at this time.

fish1.jpg


fish2.jpg
 
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You have an australian rainbow fish. Some stores call them simply australians.
Tiger barbs are semi aggressive towards their own kind...thats all i can think of.
 
from my experiance, tiger barbs either need more room than you have to just keep 2 or 3 of them than you have. In most cases tiger barbs will fight and nip fins unless they are kept in a school. 5 and up is usually a good number. Im guessing that the australian refers to australian rainbows?

http://www.aquariacentral.com/species/db.cgi?db=fresh&uid=default&ID=0583&view_records=1

If so I believe that they might get a bit to big for your 20 if you decied to go with a few more of the barbs. Either way, it looks like you might have a choice to make.
 
Irridescent sharks are really bad fish for tanks. They're skittish and just not good for tanks.
 
Get the tiger barbs into groups of at least 6. It may have been a territoral fight between two males or females. My most successful shoal was at 12 individuals due to tank limitations.

If you have a larger group, there are too many targets to focus on, and submissive fish get turns to rest as the barbs create levels of dominance. After they get into their niches in the shoal they'll still have minor skirmishes, but you shouldn't have casualties.

Iridescents get really big, but experience is the greatest teacher of all, so good luck.

With the platies, my advice is to only have 1 male in the tank and a few females.

Have fun and don't stress. Experience is everything.
 
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