| Sturgeon in Koi ponds ...
Sturgeons in a koi pond can be very useful, much fun, and then costly.
They also have a few things in common with koi: they like oxygen saturated water and some water current in the pond, as well as a calm spot to rest at times.
They are useful in the sense that they are bottom feeders (mouth way under the head) and will constantly raise/move debris around the pond bottom (hopefully until they find they way to the bottom drain :-).
Here in the Northwest, we have the Columbia river where White Sturgeons are very common. Oregon and Washington states have very strong laws about sturgeon fishing: 42-60" only as keepers and they must be dead before you leave your fishing spot.
The only legal way to get sturgeon is to buy them from a hatchery which produces them under permit.
Young sturgeons are very fragile. I would not buy one under 12" (or about 1½ year old). Sturgeons grow relatively slowly considering the filnal size they can reach: a 4 year-old would be 2½-3', while a 6 year-old could be 4-5½'.
Small sturgeons will live off the pellets that the koi leave uneaten (don't we all overfeed!), they do not eat the shit off the pond bottom as some people will make you believe. They will however eat small koi and dead koi of a pretty good size (about 1/3 of their length).
Sturgeons will need much higher protein feed than the koi. Also keep in mind that they do not slow in winter like koi do, they stay very active at low temperature. To grow sturgeons to their potential and keep them in optimal health, you need to feed them fish or comparable food (in the wild they eat chad, smelt, crawfish, eel, shrimp, etc.). With a sturgeon 3-4' in length be prepared to feed 1/2 pound of smelt daily, 5-6' in length, about a pound of smelt daily, for optimum health.
Now, if you do want a White Sturgeon, we can provide.
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Arthur
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