Barbs in odd numbers - Tropical Fish Keeping - Aquarium fish care and resources
 
LinkBack Thread Tools
post #1 of 9 Old 08-03-2011, 06:43 AM Thread Starter
New Member
 
saint fu's Avatar
 
Barbs in odd numbers

Hi, I went to my LFS to purchase some tiger barbs for my tank. My initial purchase was going to be 4 barbs. The salesperson said that it is always better to have them in odd numbers, but couldn't really give me a reason why. Was this just a selling gimmick to make me buy one more or is there some reason behind the odd number. Thanks for any info!
saint fu is offline  
Sponsored Links
Advertisement
 
post #2 of 9 Old 08-03-2011, 06:47 AM
maybe he was thinking more females less males 2 males3 females or something like that..odd or even aren't an issue if you ask me maybe he's a chinese they like odd no's

5x2x2 aro,highfin bat,fei feng,ST,albino tinfoil,c.perch
4x1.5x1.5 planted tetras,harlequins,
otto,WMM,2 types of celebes rainbows,rcs,amano, bamboo,red ramhorns,MTS
3.5x2.5x2 flowerhorn,pleco
3x1.5x1.5 russel's lion,blue cleaner,sixline and leopard wrasse,maroon clown pair,green chromis,scorpion,tiger cowrie,turbo,lyretail anthias,jewel,anemone,star polyp,marbled and giant green mushi,zoa
2x1x1 nano sw shrimps
22 May 2012
kitten_penang is offline  
post #3 of 9 Old 08-03-2011, 10:17 AM
Member
 
Beaches's Avatar
 
There are 2 different rationales behind keeping fish in odd numbers.....

1. As kitten_penang mentioned, it has to do with "feng shui" and Yin/Yang....Water is considered to be "Yin" and to balance it out, bring harmony & good luck, odd numbered fish are the "Yang".

2. Keeping shoals in odd numbers means there will be one fish that is at the bottom of the hierarchy/pecking order, thereby supposedly lessening aggression.

These are the theories anyway.
Beaches is offline  
post #4 of 9 Old 08-03-2011, 11:41 AM
Member
 
Byron's Avatar
 
Tiger Barb is not a good community fish. You can read more in our profile, click on the shaded name. But quickly, they must be in larger groups (at least 8) and in their own space (30g minimum) or in a larger tank other fish can be present, but carefully selected as TB can be very nippy and aggressive.

The "odd vs even" idea has some merit when dealing with small groups, such as 3-4. And with some species. Some of the shoaling fish [shoaling means the fish live together naturally in large groups and thus need that security] can manage in 3-4, but the "pecking order" that Beaches mentioned is the issue here. A group of 3 could result in a pairing with an odd-fish out, and this can spell disaster with some fish. Having 4 or more alleviates this, though most shoaling fish are much better in groups of 6 or more. The male/female ratio mentioned by kitten is also pertinent. Some fish are better with more females to males. But aside from these two considerations, there is no evidence of even/odd differences. Then we come to personal preferences, also mentioned by Beaches. I myself always prefer odd numbers, just for aesthetics.

Back to your Tigers, no mention is made of the tank size, but you certainly should have at least 8, and then understand that this species can be trouble. It is in their nature, and some fish seem less "natural" than others when it comes to aggression.

Byron.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
Byron is offline  
post #5 of 9 Old 08-03-2011, 02:13 PM Thread Starter
New Member
 
saint fu's Avatar
 
thanks for all the replies. the tank they are in is the one listed in my profile pick. 40gl semi aggressive. so far the 5 barbs have done extremely well with the other fish in the tank. i can see how the odd number works for aesthetic reasons. if there were only four it would look like they were swimming in a square! i guess my follow up question would be, if i decided to add two more to get a larger school, would the new ones school with the older ones (i've had them for well over a month now), or would they be seen as outsiders. tanks again!
saint fu is offline  
post #6 of 9 Old 08-03-2011, 03:06 PM
Member
 
Byron's Avatar
 
Quote:
Originally Posted by saint fu View Post
thanks for all the replies. the tank they are in is the one listed in my profile pick. 40gl semi aggressive. so far the 5 barbs have done extremely well with the other fish in the tank. i can see how the odd number works for aesthetic reasons. if there were only four it would look like they were swimming in a square! i guess my follow up question would be, if i decided to add two more to get a larger school, would the new ones school with the older ones (i've had them for well over a month now), or would they be seen as outsiders. tanks again!
I suggest adding 4 more. While they may "seem" OK now, that may not last when they get settled. More than one person on this forum has had these fish for a couple months before they started behaving according to their natural instincts. It is best to plan ahead.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
Byron is offline  
post #7 of 9 Old 08-03-2011, 03:26 PM Thread Starter
New Member
 
saint fu's Avatar
 
i'm assuming that your suggestion to get a few more means that the new ones will school with the old ones without any issues. i will probably get 2 more though, i'm not sure my tank size will allow for more. i might even be pushing it with 2.
saint fu is offline  
post #8 of 9 Old 08-03-2011, 03:59 PM
Member
 
Byron's Avatar
 
Quote:
Originally Posted by saint fu View Post
i'm assuming that your suggestion to get a few more means that the new ones will school with the old ones without any issues. i will probably get 2 more though, i'm not sure my tank size will allow for more. i might even be pushing it with 2.
I was thinking this was a 40g tank. In checking your log just now I see it is, so that's OK with 8 TB. But if you have all those other fish, you are headed for more trouble. Leporinus fasciatus is much too large a fish for anything under 4 feet (90g). I think you need to decide on what you want "in the end" and plan by removing some fish/adding others. To be at their best in health and "happy" fish must be provided what they need for their species.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
Byron is offline  
post #9 of 9 Old 08-03-2011, 06:01 PM Thread Starter
New Member
 
saint fu's Avatar
 
yeah, i've been getting some conflicting info about the leporinus. the store had it listed as a 6" max, which is what i am trying to keep my largest fish at, but a lot of info i'm seeing here shows it can get over 12". i might take him back and swap him out for a couple more tiger barbs.
saint fu is offline  
Reply

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
l numbers jb92 Catfish 2 10-13-2007 03:33 AM
Water Changes, By The Numbers fish_4_all Beginner Freshwater Aquarium 4 09-24-2007 12:09 AM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome