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post #1 of 10 Old 11-22-2016, 08:22 AM Thread Starter
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Guppies with curved spine

Hello,
Iīve bought some guppies last month (2 males and 2 females(I know this isnīt the correct ratio for breeding)), and one female guppy gave birth to around 15-20 guppies, most survived but some have curved spines (they also swim a bit funny), I had this problem some years ago and I posted it here but didnīt get any proper reply and couldnīt find anything on the internet about it, and now I can see more cases about it so I guess itīs a bigger problem nowadays. My problem is that I donīt know if I should separate the guppies with a curved spine from the other guppies and keep feeding them well so they can grow in a proper way but this way they might reproduce in the future which will carry on the disease. Or maybe I should let them die or be eaten by the others which will stop the disease from spreading. Does anyone know the best way to deal with this problem?
Thanks.
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post #2 of 10 Old 02-11-2017, 08:12 PM
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Did your guppy give birth at night? If it did high chance is not enough light for fry to grow properly

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post #3 of 10 Old 02-12-2017, 09:09 AM Thread Starter
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I never thought of that, but yes Iīm pretty sure it was at night. It was quite some time ago, the guppies reproduced a lot more, some at night and some in the day. But none of the fry had curved spines anymore, so itīs not a problem anymore, I think the cause of the curved spine is either genetic, malnutrition or a disease linked to malnutrition/genetics, Iīve read a bit more on the internet and thatīs my conclusion.
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post #4 of 10 Old 02-12-2017, 09:14 AM
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Guppies with curved spine

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Originally Posted by tourist585 View Post
I never thought of that, but yes Iīm pretty sure it was at night. It was quite some time ago, the guppies reproduced a lot more, some at night and some in the day. But none of the fry had curved spines anymore, so itīs not a problem anymore, I think the cause of the curved spine is either genetic, malnutrition or a disease linked to malnutrition/genetics, Iīve read a bit more on the internet and thatīs my conclusion.


You are absolutely right. It has nothing to do with the amount of light the tank gets. They OFTEN give birth at night.

Guppyfish I accidentally thanked you - don't want you to think I was taunting you or anything like that.

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
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post #5 of 10 Old 02-12-2017, 06:15 PM
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Possibly camallanus or TB. Hard to know for sure. Deformity is certainly a possibility.

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Last edited by flchamp89; 02-12-2017 at 06:21 PM.
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post #6 of 10 Old 02-13-2017, 05:31 AM
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I've heard rumors that if calcium content - aka: high hardness - it helps reduce the amount of fry with a deformed back. But I personally believe its linked with inbreeding and from that, genetics. Personally, increasing the gene pool - by sourcing guppies from other places - would minimise curved spines...

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post #7 of 10 Old 03-04-2017, 12:20 PM Thread Starter
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None of my fish are linked genetically, only 1 or 2 guppies were bought from the same shop they all have different colours, and yes my aquarium has become more hard so I guess that also could help.
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post #8 of 10 Old 03-04-2017, 12:46 PM
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What have you done to harden the water?

I too have heard that harder water helps with development.

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 #9 of 10 Old 03-04-2017, 01:19 PM Thread Starter
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I use limestone rocks to decorate my aquarium, these rocks are from the coast (5min from were i live), I use the rock because it has a nice texture and it looks really good in aquariums. I occasionally put some vinegar in the aquarium to balance the ph level and increase water hardness, it increases the water hardness because the vinegar reacts with the limestone and releases some minerals like calcium carbonate (hydrogen carbonate) which makes the water hard.
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post #10 of 10 Old 03-04-2017, 01:41 PM
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Cool! Yeah I don't mess with the water chemistry so it sounds like you've got a better handle on all that than I ever will

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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