Koi Fish

Mississippi

Registered Member
Oct 2, 2005
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I have recently gotten my first aquarium and am now purchasing another. I am new at all of this but learning more everyday. A friend gave me 2 small Koi fish from an outdoor pond to put into my Aquarium, the fish are eating well and seem to be adjusting to the other fish and their new environment. I can't find much information on the internet for raising Koi fish in an aquarium, only outdoor ponds. If anyone can give me any information it would be greatly appreciated.
 
I am speaking from experience...They ARE NOT aquarium fish at all. They grow very fast and eat everything including small tank mates. What size tank do you have and maybe some of us can make suggestions. :hi:
 
I agree with IvannaFish - koi aren't well suited for aquariums at all. They get far too big for most tanks and really do better in ponds.
 
yeah, think 2 feet long. . .
 
That's why you're having trouble finding info on keeping them in aquariums...because they aren't suited to aquariums.
 
The 2 fish I have are about an inch to 2 inches long. I have them in a 10 gallon tank. I thought they were supoose to be similar to Goldfish and only get as big as their environment.
 
The reason goldfish grow to the size of their tank is because their growth is STUNTED and shorten their lifespan CONSIDERABLY. You hear about goldfish living for 5 years, thing is, regular goldfish can live for decades if properly kept. Koi can live for 40+ years if they have enough room. They won't last long at all in a 10 gallon.
 
Please return them to the pond. They'll thank you for it.
BTW what other fish do you have in the aquarium?
 
small tank + outside stops growing + internal organs keep growing = floating fishy
 
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