why are deformities in fish so common? - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 3 Old 07-20-2010, 12:38 PM Thread Starter
Inga's Avatar
why are deformities in fish so common?

why are deformities in fish so common? I have read several threads on this forum and on others about people having fry in their tanks and how some of them are deformed. I also keep hearing people say they had deformed fish. Also, without even knowing it, I apparently had 2 deformed fish. I had purchased 4 of the same species and at least 2 of the 4 had some deformity? Why is this so common? Is this due to inbreeding or being raised in crowded or too small of environments? Could it be inappropriate diet or water conditions? Is it just normal for so many fish to be deformed and then in the wild, they simply don't make it long?
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post #2 of 3 Old 07-20-2010, 04:29 PM
inbreeding always causes deformation in any species. they are some deformity due to sickness ad bacterial infections during birth and they wont do well or are eaten up at a very young stage so we rarely see them in the wild example wild albinos of any species ;)

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
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post #3 of 3 Old 07-21-2010, 02:44 PM
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Inbreeding is the big one. Like kitten said in the wild these deformities get taken out of the gene pool very quickly.

I've heard it implied at times that high nitrate levels can have an effect on fry's development resulting in physical deformities if the levels are too high.

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