fish growth stunting hormone

[sostoudt]

recently i found out multiple types of fish release hormones or enzymes that stunt their growth and growth of there tankmates. does anybody body have links about this?
does any one know the name of the hormone?
what about removing it? will carbon work or only water changes?

 

[Austin]

bigger enclosures, lots of water changes and good feeding/food will make all the difference. Example: my azul's are rolling up on 8"+ and i got them at the same time as my buddy and his are only 5"ish. He takes great care they just are in a smaller tank and i think he feeds differently.

 

[BlackShark11k]

Not sure the official "name" of it is, (btw, it is definately a hormone not an enzyme) but it definately does stunt growth and does so when the fish is exposed to poor water quality for extended periods of time.

I highly doubt you could remove it, and even if you could, it's by far better just to keep your water parameters in optimum condition.

 

[sostoudt]

I highly doubt you could remove it, and even if you could, it's by far better just to keep your water parameters in optimum condition.

well the thing is i was thinking of adding plant based filtration to my goldfishes tank, done right or big enough this would keep nitrates at or near zero. so water changes would be few and far apart. i would hate for this to stunt there growth when im thinking the water is perfect.

 

[sostoudt]

also am i to assume this affects all cichlids also, because i hear about alot in relation to discus. and i was thinking of breeding some

 

[BlackShark11k]

It's not the amount of water changes but the water parameters. Assuming they are in a stable range (ammonia 0, nitrIte 0, nitrAte under 40) there should be any problem

 

[Austin]

well the thing is i was thinking of adding plant based filtration to my goldfishes tank, done right or big enough this would keep nitrates at or near zero. so water changes would be few and far apart. i would hate for this to stunt there growth when im thinking the water is perfect.

yes, nitrates would stay low but the water begins to lack other things. minerals and such. just stick to water changes and plants, goldfish are messy

 

[BlackShark11k]

yes, nitrates would stay low but the water begins to lack other things. minerals and such. just stick to water changes and plants, goldfish are messy

Actually mineral levels would increase with the lack of water changes...

regardless, water changes are good and there is no excuse not to do them!

 

[OnceLoyal]

This is a hormone that is 100% natural in occurance. IMO it is put into affect for one reason. To help keep bodies of waters in nature from over populating in a sense. Water changes is the only way to go. This is how you can make a fish outgrow its tank with no problem. (water changes that is)....... Since my 8Ft tank busted a seam and the 2 Armatus the only fish I was able to save got stuffed into a 75 divided their growth rate went down. I am not doing to many water changes and try to keep feeding to a minimal. Should be about 1 more week and they will have their new home. I am not sure if this hormone is in every fish, but imo it is more present in your more aggressive fish.
Pacus being a good example imho I don't think have or release as much of this hormone as say an Armatus does.
I would like to say that the hormone thing in general is a fact that I have proven to myself over and over throughout many years. Wether or not it varies per differnt species is just my feeling. I am not sure where to point you for more factual info, just google google google I guess.

 

[sostoudt]

i believe these are actually pheromones we are discussing.. they have water are called primer effects that will influence the developement of fish.
http://www.carpbusters.com/documents/Sorensen_Stacey%5B1%5D.2004.NZJfinal.pdf
heres a article a seachem rep found for me. lupin you may like it as its based on carp and goldies

also he imformed me purigen and carbon remove the pheromones.