Rainbow fish shoaling? - Page 2 - Tropical Fish Keeping - Aquarium fish care and resources
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post #11 of 16 Old 03-24-2011, 07:15 AM Thread Starter
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Running both an Aquaclear 50 and an Aquaclear 70 on the tank for filtration. Aqadvisor.com states that stocking level is at ~120% but filtration is ~135% if I did this right. I plan on moving the mollies and a cory group over to the 29 when the other rainbow gets out of QT. The cory group is needed there to clean up the bottom of the tank.

20 Gallon Planted Guppy tank. Amazon Sword, Dwarf Hairgrass, Cardinalis.
55 Gallon -1 BN Pleco, 1 High Fin Syndontis, 1 Oto, ~18 Kenyi Cichlids
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post #12 of 16 Old 03-24-2011, 01:34 PM
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Proper school size of 5... for a fish that in the wild will school in groups of hundreds to thousands. Keeping 3 isn't going to make a big difference vs 5 unless there is a male/female ratio that isn't working out due to the confines of an aquarium. It is better to keep a smaller group if a larger one means the risk of overstocking a tank. If, however, there is no stocking issue... then more is fine.

Dawn Moneyhan
Aquatics Specialist/Nutritionist
Juneau, WI
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post #13 of 16 Old 03-24-2011, 02:12 PM
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I agree, it's not a good idea to risk the overall health of the tank for the sake of one group of fish. The bottom line is that if you want a schooling fish, then choose one small enough for you to fit several in the tank. There is a big difference in behavior from 3 to 6, and even BIGGER from 6 to 12.

in all honesty, the OP ought to return the 3 australian, or carin, or whatever they are, for 7 or 8 dwarf neon rainbows or 10-12 blue eyes.

125 - BGK, chanchito cichlid, pictus cats, silver dollars, palmas bichir
125 - cichlids (severums, bolivian rams, chocolate), rainbows ( turquoise, red), loaches (angelicus, zebra, kuhli and horseface), plecos (BN, RL and clown), denison barbs, tiretrack eel, pearl gouramis, betta
90 - Congo tetras, african knife, upside down cats, spotted ctenopoma, kribensis, delhezzi bichir
2.5 - betta
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post #14 of 16 Old 03-24-2011, 02:27 PM
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I still don't see a problem with the 3 as they are. Many breeders will separate fish by pairs in an isolated tank until they spawn, then remove the adult fish to another tank, thus saving and raising the eggs themselves. Even with something like rainbows, this is not an uncommon practice and causes no issues for the fish being away from a large group. If this were something like neon tetras who are known to get sick and die off without a large enough group, then I could understand the concern.

There comes a time when things are doable, safely, and it becomes the hobbyists choice. Not everyone is going to agree with everyone elses practices in fish keeping. As long as no harm is coming to the fish, they are properly cared for, healthy, and well adjusted to their environment and tank mates, not showing signs of stress or illness, then I think its time to back off and just continue to encourage healthy fish keeping. Keeping rainbows in a group of 3 is not going to jeopardize their health, unless, as mentioned, there is a male/female conflict.

Dawn Moneyhan
Aquatics Specialist/Nutritionist
Juneau, WI
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post #15 of 16 Old 03-24-2011, 03:10 PM
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Quote:
Originally Posted by bettababy View Post
I still don't see a problem with the 3 as they are. Many breeders will separate fish by pairs in an isolated tank until they spawn, then remove the adult fish to another tank, thus saving and raising the eggs themselves. Even with something like rainbows, this is not an uncommon practice and causes no issues for the fish being away from a large group. If this were something like neon tetras who are known to get sick and die off without a large enough group, then I could understand the concern.
Certainly breeding practices are different than just keeping fish. That's comparing apples to oranges.....

125 - BGK, chanchito cichlid, pictus cats, silver dollars, palmas bichir
125 - cichlids (severums, bolivian rams, chocolate), rainbows ( turquoise, red), loaches (angelicus, zebra, kuhli and horseface), plecos (BN, RL and clown), denison barbs, tiretrack eel, pearl gouramis, betta
90 - Congo tetras, african knife, upside down cats, spotted ctenopoma, kribensis, delhezzi bichir
2.5 - betta
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post #16 of 16 Old 03-24-2011, 10:04 PM
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Originally Posted by Jakiebabie View Post
Gwen the /Dwarf females have yellow fins and the males have red fins. I have 2 f and 1 m only cause that was all the store had. Hope to get more. As for my Lake Kutubu Rainbowfish... see my Avatar... I had One very large one, added two more much smaller and very bad fins but the large one did not harm or harass the little ones. In fact it is quite friendly and no worse for wear for having been on its own. Must be a girl. lol. Not sure how to tell the sex of LKrainbowfish. Want 3 more of them too. The bad fins have grown in nicely and they two youngsters are doing well.
Boesman's are yellow and green aren't they? Are yours yellow and green?
I love Rainbowfish.
Jackie,

I know about the fin colors, and for sure one is a male, but the LFS I got them, thought one other was possibly a male (though it did look like a female). When they are young, apparently it's not as evident. My are all fine now that I have 5, so perhaps I do have 4 girls and one boy. Though I read they are pretty peaceful with each other, so I'm okay. I believe the Bosemans are a bit more aggressive if you have 2 males, but that's probably only with limited space. I bought 2 Bosemans, awhile ago, but after I got them home, and did more reading on them, I realized my tank sadly is not big enough and I returned them. They are very pretty, blues and yellows. Even now that I've upgraded to a 43 gal tank, it's still not big enough for Bosemans

I do like my dwarf rainbows, they seem very smart. I just now have to decide what other fish I will add to my larger tank. Still need to get it cycled.

Gwen

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