Identify this monster

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Very nice catch, it's sad that things like this are common in rivers now a days. People need to learn not to release the fish when they get to big.
 
I would have to disagree here, I have raised koi in aquariums for many years. They make excellent tank mates super observant of there suroundings and can adapt to about any climate. I dont see a temp of 80 or below causing any stress to the fish as long as the water Q stays appropriate and you have good oxygen levels. One community tank I did as an experement included, 4 fancytail golds, one feeder gold that is four years old btw, two male guppies, an octo, cory and a kiss gourami. An extememly odd setup, but the purpose was to see if the golds could withstand the warmer climates. two and half years no problems. They do great together.





walls;652047; said:
Nice fish!

Now for the bad..........

1. It is a cold water fish and making him adapt to the tropical temps of the tank is "wrong" and will eventually stress him/her out.

2. IMO you took a huge risk putting that fish in with your established fish. Who knows what pathogens you have now introduced into your tank.

3. KOI generally do not thirive in a "tank" environment. I would suggest putting him back in the pond/pool he was in.

Not flaming just voicing my opinion. ;)
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as to whoever asked about koi swimming around in the wild...I live in MA and the pond at school is FULL of them...it's like, a two acre pond and it freezes over in the winter.
 
troubleshootn;4236801; said:
I would have to disagree here, I have raised koi in aquariums for many years. They make excellent tank mates super observant of there suroundings and can adapt to about any climate. I dont see a temp of 80 or below causing any stress to the fish as long as the water Q stays appropriate and you have good oxygen levels. One community tank I did as an experement included, 4 fancytail golds, one feeder gold that is four years old btw, two male guppies, an octo, cory and a kiss gourami. An extememly odd setup, but the purpose was to see if the golds could withstand the warmer climates. two and half years no problems. They do great together.
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Goldfish and KOI are COMPLETELY different, and adapt completely differently as well.

Goldfish can live in the most oxygenless waters, where as koi would perish. Koi are VERY sensitive to oxygen levels, and water quality.

It's not ideal to keep KOI in a fish tank unless the tank is large. And I am talking 500+ gallons. Small baby koi can live in a 100 gallon tank with one another for a small amount of time, but koi grow an access of 4"+ a season, so they need to me moved into a pond to get their full life quality. Tanks can and most of the time do, severely stunt their growth.

And heated waters are not recommended. Koi should only be in heated (75 and up) when you are treating for parasites or sores/ulcers- in which you would add .3% salt as well.
 
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