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post #1 of 8 (permalink) Old 01-19-2011, 06:21 PM Thread Starter
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Tetra Schooling Question

So I have 5 cardinal tetras at the moment and thinking about getting 5-7 more.. If I was to put say a dwarf gourami in there with them, will they school because of the larger size of the gourami? Or does anybody have any ideas on getting the fish to school without stressing them?
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post #2 of 8 (permalink) Old 01-19-2011, 06:28 PM
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How big is your tank?
Also, I'm pretty sure they'll school if you want them to or not, with or without the gourami.
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post #3 of 8 (permalink) Old 01-19-2011, 06:30 PM
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Cardinals will constantly shoal. They only really school if theyre firghtened.

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post #4 of 8 (permalink) Old 01-19-2011, 06:37 PM
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Ahh, sorry I always mix school and shoal, I just assumed this is what you meant.
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post #5 of 8 (permalink) Old 01-19-2011, 06:45 PM Thread Starter
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School/shoal/swim together, it all works.. It's a 30 gallon so I suppose not to much swimming room.. It's 36" long.. I see what you're saying, I wouldn't want to frighten them.. You think it comes down to the more I have the more they'll shoal? I understand I can't have too many in a 30 gallon. Thanks for the posts.
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post #6 of 8 (permalink) Old 01-19-2011, 06:49 PM
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Well IME the more you have the better they stick together. But what I think Chad was getting at is cardinal tetras don't school as well as say rummy nose tetras. They just hang out in a loose group, where as rummy nose swim in a much tighter formation.


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post #7 of 8 (permalink) Old 01-19-2011, 06:52 PM Thread Starter
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Hmmm, had I had a 55 gallon setup I'd go them but their just a tad big for a 30 gallon I feel.. Rummynose get to about 2-3", yeah? But I have heard that..
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post #8 of 8 (permalink) Old 01-19-2011, 08:12 PM
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Quote:
Originally Posted by Solid View Post
Well IME the more you have the better they stick together. But what I think Chad was getting at is cardinal tetras don't school as well as say rummy nose tetras. They just hang out in a loose group, where as rummy nose swim in a much tighter formation.
This has been my experience, as well. I started with 6 cardinals and, for the most part, they did their own thing and only occasionally hung out together. They also stayed in the plants much of the time. I've since increased them twice to 11 and currently to 15 and they almost always all stay pretty close now. They also spend most of their time out in the open now. I guess they were just more insecure with the lesser numbers.

They definitely are shoalers rather than schoolers, at least as I how I think of those two terms. I think of shoaling as just hanging out together, but not necessarily being active swimmers or always insistently following each other. I think of schooling as not just hanging out together but swimming more actively and more urgently trying to stay close together. Cardinals are excellent shoalers if kept in higher numbers and rummynose are excellent schoolers. Mine are always on the go except when the lights go out.
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