My Koi Ate TWO PECANS Whole! Should I Be Worried?

My Koi Ate TWO PECANS Whole! Should I Be Worried?

“Before I go any further, I am self employed, and nothing annoys me more than folks expecting me to do what I do for a living for free.  In this regard, I intend to pay you for any consultation, so please let me know your rates.”
(That was super classy, but I did not charge the fellow)
“Regarding Mini the chargoi, I spoke to Joe Hatter of the Koi Club last night, who opined that she probably either passed them through her gills or spat them out after she submerged where I could not see her.  He advised to keep an eye on her for the next couple of days, and check that she’s not swimming around with her mouth open.”
“This morning she was swimming around with the others, and came up to see me – so I fed them.  No apparent issues this morning…
I’m interested to hear your thoughts, Dr. Johnson.”
Kind Regards,

Koi Who Ate Whole Pecans

My Response:

Great case!
She’s big enough to engulf a PECAN?
Here’s something that you probably did not know. Well, you probably do know that Koi have teeth, in the back of their throat and those teeth go up against a diamond shaped bone to crush what they eat.
can koi eat nuts
They can crush a snail like it’s nothing.
If you got your pinky finger between the teeth in that bone, they probably would fracture it at the size I think Mini is.
I said all that to say this:
My wife and I used to target practice over the pond with Ruger P 89‘s which are 9 mm semi autos. Interestingly, they have a forward eject of the shells meaning that the casing flies away from the shooter and they happen to end up in the pond!!
Well, I didn’t think anything of it because they’re made of brass and that doesn’t dissolve into anything important, and why would a Koi eat a brass casing?
Well one day my doitsu Kohaku stopped eating and eventually wasted away. She was substantial so I put her under a flower pot so her bones would get picked and I could perhaps recover a sizable skull and teeth. It also helps to find out, postmortem, whether or not it was a piece of gravel that blocked them. Much to my chagrin, what I got was a 9 mm brass casing that had been flattened on the open end by her teeth.
koi ate pecan
9mm casings ejected into the pond were flattened by a 17″ koi and swallowed. Fatal outcome.

She had apparently carried it around chewing on it until she thought it was small enough to engulf and she swallowed it!!!

A decent size 16-17” Koi can crush a 9 mm brass casing!

A pecan is no challenge.

That other fella was right, the only time it goes awry is when the nut can’t get back to the teeth and fills the oropharynx and can neither be spat out nor passed out under the grill cover.
Diagnosis of an oropharyngeal obstruction is the Inability to eat, so if Mini is eating, you win!
I would not expect any problems, if however she stops eating, we might be having a problem with some of the shells in her stomach however I doubt it because in nature these animals have no problem eating whole snails and freshwater clams.

Enter your email address for a free PDF of this article including its images.

Enter your Email Address

My Favorite Amazon Recommendations

Items and content will not show in "Reader View" check your browser.

This is The LCD Screen Scope
We Did The Tutorial With. I did a twenty page tutorial (Here's the tutorial) with video, audio, images and even little parasite movies to show you how to use a microscope. 

This Filter is Good For BIG Dirty Tanks
I've been wrestling with water quality with the turtles. The sponges work GREAT, but in THOSE turtle systems where they eat MICE the poops are bulky. This filter can handle it. In "Tortu's" tank, it's got an 800 gph pump and it rocks. 

PraziPro for Flukes
They nailed it. Figured out the solubility and worked out the dosing. It works. 

Buy Some Good Koi?
No, this isn't really for the 'high end' collector y'all. But for someone who isn't near a decent garden center, here are "good-to-quite-good" Koi you will like at a very good price. I know these guys personally.

Best Food, Ever
It's made for (and I discovered it for) my Blood Parrots but the small size, intense color enhancers and excellent formulation make it superb young-Koi food. Oh, and it's AMAZING on color-cichlids like Flowerhorn and Blood Parrots. 

Pro Air 60 Aerator is a VERY high output air pump pushing my whole fish room (17+ drops), and I have one at home driving everything there, and I have one as a back up. 

Formalin Malachite (Not dilute)
There are formalin malachite preparations at 10%, 22% and 37%. There's economy in the concentrates. Hard to get Prime shipping because air transport is curtailed. This is a good value on 32 ounces. 

Topical For Koi and Pond Fish Ulcers
I like 7% tincture of iodine because it stains but it's hard to hurt anything with it. Used with a WOVEN gauze, this works well to clean and disinfect a wound. Only use ONCE. Do not 'repeatedly' scrub wounds. 

Confectioner's Glaze 
Is the way to bind a medication to fish food. Gone are the days of paste food and oil. The write up is done, it's RIGHT HERE.

Koi Health & Disease
Hopefully this link takes you to the newest edition by PRIME to get it to your house the fastest. 

I have over ten of these Titanium Heaters in my fish room and at home. They're a paradigm shift in aquarium heating. They're titanium and 400W for under $30! Whaaaaaaaaat?

CyroPro by Hikari is safe and easy for Anchor Worms and Fish Lice.

Whatever heaters you use, back yourself up with a temperature controller, it'll turn on, and off your heaters. If your heater seizes "on" at least the thermostat will stop a tragedy. 

LifeGuard by Tetra is a tablet version of a tame 'chloramine-t' or 'halamid' compound that's easy to get and good on bacterial infections, in baths. 

If you're making medicated feed for a larger group of fish, this will come in handy. Dosing is available in the site. 

For me, filtration-of-choice
For aquariums, even small Koi holding facilities or small ponds. These sponge filters are cheap, easy to clean, and they clear hazes very well when used with some Accuclear or similar.

Rubber sided, round, nettable tanks
Make great hospital or quarantine facilities. They SHOULD cost about $200-300 depending on size, but this, lower quality unit (while panned in some reviews) may be good. Don't overfill and make sure it's propped up.

1200 Watt heater, on a thermostat held securely above the waterline, works GREAT as a large tank heater. That's all I'll say because there's risk of electrocution and all that. But then, even in a bucket you could get killed. Sound like fun?
I have several of these ALLIED PRECISION stainless ones that are a couple years old. Working still. 

Potassium Permanganate 
500 grams could be a lifetime supply but it's 50% more than the 100g cost wise, for 500% more amount. Dosing is in the site and the book.

What Does Ajax Eat?
I looked for something well formulated, with meat as the first ingredient. Something UNDER $2/lb and something they could deliver for free. And this was it. He looks and feels great on it.