The dreaded RTC

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The Koi fish I’m buying are coming from a reliable Japanese breeder and are guaranteed to hit at least 2.5’ long (with proper care), and they’re costing a damn fortune lol. The RTC costs about 20$ at my LFS, so yea I probably won’t risk it haha. A friend of mine has RTC in a 22,000 gallon pond in his back yard that was 4’9” when he measured it at the end of last summer (it’s around 10 years old). So that’s what I was judging its potential size off of. I’m thinking I’ll hold off on the RTC, any idea if a tiger shovel nose would have better results? They just got some of those in a week ago at my LFS. I just want a large bottom dweller besides a common pleco that could go with the Koi. The whole pond system with the “sump” is going to be pushing 5,000g of water volume, 2 koi just seems like a waste of all that space ya know?

Carefully culled and raised Japanese koi in Japan mud ponds in the hands of a Japanese breeder can and will hit 2.5'-3' in under 10 years. In our hands, I'd not expect it. Yeah, they are expensive fish!

You can get a 1.5'-2' RTC from The Fish Place (or Pets Plus in Lockport, or Markheim's pets) for $50-$100, or so it used to be.

Your friend's RTC is the biggest I've heard of raised in captivity. This is quite rare, I think, hence, I'd not count on it. Taksan (a former member here) kept a pair in 15,000 gal for 27 years and they maxed out at 4'.

TSN would be better with koi that it cannot fit in its mouth by any stretch of imagination. RTC is known to still try. Still a gamble. But TSN will not break 2.5'-3' as what we get is refuse culls from food fish farming or cheaply raised TSN from SE Asia.

2 Koi is just a start, a seeding, or a catalyst. It's common knowledge that one can't stop buying koi until there is more koi mass in the pond than water :)


I probably won’t try to keep anything outdoors during the winter, I live in western NY and a couple years ago we had 8’ of snow lol. I’ve heard Koi can survive a freeze if the pond is deep enough and you keep an opening in the ice sheet, but I don’t wanna risk it. It looks like those sharks hit 3’ pretty easy, so the 2 koi and a couple of those in an 1800 gallon plywood indoor pond be ok for a third of the year?

I think so. I lived in Rochester NY for 10 years and we had a 12,000 gal koi pond, 6' deep, did ok in winters with just a deep water fish tank bubbler.

The sharks or the sturgeon? I can’t find anything on the banded sharks needing brackish/salt, and I know for a fact there are fully freshwater sturgeon in the Great Lakes. It’s possible there are brackish/marine sturgeon but I have no idea.

As far as the banded cats, they’re full fresh as far as a dozen pages told me. Oddly found out there definitely brackish and marine sturgeon lol

I am not aware of the Chinese high fin barbs/sharks/loaches needing salt in their water.

Sturgeon however are rarely all freshwater. Most are anadromous, meaning they enter freshwater only to spawn, like salmon. Some are catadromous, entering marine water to spawn, like eels.

Some get landlocked.
 
Carefully culled and raised Japanese koi in Japan mud ponds in the hands of a Japanese breeder can and will hit 2.5'-3' in under 10 years. In our hands, I'd not expect it. Yeah, they are expensive fish!

You can get a 1.5'-2' RTC from The Fish Place (or Pets Plus in Lockport, or Markheim's pets) for $50-$100, or so it used to be.

Your friend's RTC is the biggest I've heard of raised in captivity. This is quite rare, I think, hence, I'd not count on it. Taksan (a former member here) kept a pair in 15,000 gal for 27 years and they maxed out at 4'.

TSN would be better with koi that it cannot fit in its mouth by any stretch of imagination. RTC is known to still try. Still a gamble. But TSN will not break 2.5'-3' as what we get is refuse culls from food fish farming or cheaply raised TSN from SE Asia.

2 Koi is just a start, a seeding, or a catalyst. It's common knowledge that one can't stop buying koi until there is more koi mass in the pond than water :)




I think so. I lived in Rochester NY for 10 years and we had a 12,000 gal koi pond, 6' deep, did ok in winters with just a deep water fish tank bubbler.





I am not aware of the Chinese high fin barbs/sharks/loaches needing salt in their water.

Sturgeon however are rarely all freshwater. Most are anadromous, meaning they enter freshwater only to spawn, like salmon. Some are catadromous, entering marine water to spawn, like eels.

Some get landlocked.
I’m guessing you live around Buffalo lol, name dropping The Fish Place and all :P ;) 6’ deep pond with a deeply placed bubbler? Was it just Koi in the pond? I’ve heard that not much else can survive those kinds of temperatures but if they can, that would be awesome (and save money on building a pond in the garage for winter). Also gotta throw it out that I love the fish place and won’t buy livestock at any other stores anymore!
 
I’m guessing you live around Buffalo lol, name dropping The Fish Place and all :p ;) 6’ deep pond with a deeply placed bubbler? Was it just Koi in the pond? I’ve heard that not much else can survive those kinds of temperatures but if they can, that would be awesome (and save money on building a pond in the garage for winter). Also gotta throw it out that I love the fish place and won’t buy livestock at any other stores anymore!
You could keep channelcats. They come in many colors, blue, brownish, silver, grey, black, white, pink, silver or blue with spots and piebald. According to thebiggerthebetter thebiggerthebetter they can grow to 4', but I've never seen one wild or captive much more than 3'. most don't even get that big. They are NY natives, too.
 
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I’m guessing you live around Buffalo lol, name dropping The Fish Place and all :p ;) 6’ deep pond with a deeply placed bubbler? Was it just Koi in the pond? I’ve heard that not much else can survive those kinds of temperatures but if they can, that would be awesome (and save money on building a pond in the garage for winter). Also gotta throw it out that I love the fish place and won’t buy livestock at any other stores anymore!
Read my prior post in its entirety and attentively, will yah? :)

Our pond had koi, goldfish, shubunkin, golden orf, and channel catfish.

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Holy crap that’s gorgeous! Yea sorry, I did read it, I got a literal hole in my brain so sometimes details just slip by. I wish I had enough yard space to work with for a pond that size! My back yard is (for some reason, previous owners were weird.) almost entirely paved, so the area I’m working with is about the only unpaved portion.
 
The prior owners of your house were just like me. They hated maintaining grass. They just had a different way of coping with it.
 
Shark. Ik sturgeon are freshwater lol. I could very well be wrong can't say I've read into them much and when I did it was years ago now.
They can't survive salt, full freshwater, some sturgeon species can swim into freshwater tho
 
Fish that can survive cold weather that you may also like : channel catfish (most I've raised grew to 30 to 36 inches), blue catfish,golden mahsheer,common snapping turtle (need a fence around pond,take inside during winter,may attack dogs),
 
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