Koi and aquarium fish cremation in Centennial
Whether it was a prize koi or a goldfish from the school fair, you deserve a clear answer. Here's what fish aftercare looks like in Centennial, step by step.
- Pond and aquarium fish both covered
- Water cremation where it's offered
- Kind ways to explain it to children
Centennial, Colorado
Who will cremate a fish in Centennial?
Centennial is a large suburb of about 109,000 south of Denver, formed in 2001 from neighborhoods that had been unincorporated for decades. Most homes are single-family houses in established subdivisions, with townhomes near the Denver Tech Center and Interstate 25. With Aurora about 10 miles away and good highway access, you have many aftercare options within a short drive, or you can ask for collection from home.
Centennial is laced with greenbelts and trails, and Cherry Creek State Park sits just to the northeast. Many households also have backyards with room for a small memorial garden. Some families dig a small plot beside a backyard tree, while others keep an urn inside and save a little to scatter somewhere their pet loved. For renters, or anyone likely to move, an urn keeps options open.
For families in Centennial with a pond full of fish, one loss often raises a practical question about the others: is this the start of something? If two or more fish die close together, chill rather than freeze the freshest one and ask your vet about an aquatic specialist. Some vets in larger cities such as Aurora work with fish. Knowing the cause protects the pond and can ease any guilt you're carrying.
With roughly 108,658 residents, Centennial is the 11th-largest of the 36 Colorado communities we cover. Some of the providers who serve Centennial are based about 10 miles away in Aurora, the nearest larger centre, so collection times reflect that drive.
Centennial sits within easy reach of Parker (8 miles), Englewood (8 miles) and Littleton (8 miles). A provider based in any of them will usually collect from Centennial; ask what the mileage adds to the bill.
77.4%[1]
The NFDA projected Colorado's cremation rate at 77.4% for 2024.
10 million[2]
About 10 million US households keep freshwater fish.
13%[3]
13% of UK households keep an indoor fish tank.
3-5% of body weight[4]
Embrace notes cremated remains typically weigh about 3-5% of the pet's original body weight.
Where these figures come from: American Pet Products Association (APPA) 2025 National Pet Owners Survey release and UK Pet Food (formerly PFMA) Pet Population 2026.
Cremation, custom and the family fish in Colorado
With cremation chosen for roughly 77.4%[1] of deaths in Colorado, many families have already arranged one for a relative and know the questions to ask. They apply to a fish on a smaller scale. How is my fish tracked at every stage? Is it cremated alone, or alongside other pets with a divider between them? When do the ashes come back, and in what? A provider that answers all three without fuss is usually a safe choice.
The Colorado percentage above is from NFDA 2024 Cremation & Burial Report state projections (via Occasional Sage) (2024) and refers to human funerals. Treat it as context for Centennial, not as a count of pets.
Centennial weather, ponds and timing
In January, when lows in Centennial average around 18°F, a fish that dies can wait in an unheated garage or shed inside a lidded tub, as long as it stays frozen solid. That helps if your kitchen freezer is small. Watch for mild spells, and for animals: a tub with clip-on catches keeps raccoons, foxes and the family cat out. Move it to a freezer indoors if a thaw is forecast.
Frozen ground is the practical problem for a fish that dies in a Centennial winter. With lows below freezing for 5 months of the year, a garden burial may simply not be possible until spring. That's fine. Seal your fish in a bag, label it and keep it in the freezer. Many families find it comforting to wait and bury their fish when they're planting the garden.
Fish cremation prices for Centennial families
In the US, almost every fish falls into the smallest weight band on a cremation price list. CareCredit's guide puts pets up to 30 lb at $45 to $75 for communal cremation and $100 to $175 for private[5]. That minimum exists because running the chamber costs much the same for a goldfish as for a small dog. Home collection, a decorative urn and a glass keepsake all add to the total, so ask any Centennial provider for a written figure.
The full price table by size is on our Colorado page, and the services page explains what each option includes.
Free tool
Cremation cost calculator
Estimate a realistic price range for your pet's size, location and the type of cremation.
Local rules in Colorado
If you rent, your lease matters more than any law. Most tenancy agreements don't mention pet burials, but a landlord or homeowners' association can still object to a grave in a shared garden. A planter on your own balcony or patio avoids the question, as does cremation. Pond fish in a rented garden raise one more point: ask before draining or filling in a pond when you move out. The notes below cover what Colorado allows.
Colorado keeps an official directory of local governments; use it to reach the county or city office that covers Centennial.
The rules that apply across Colorado (home burial, scattering and who oversees pet cremation) are summarized on our Colorado page. Centennial may add its own conditions, so check with the city or county before digging.
From the first minute to the last goodbye
- Make sure. Watch the gills and fins for a full minute. A fish lying still on the bottom can be chilled, stunned or very weak rather than gone.
- Lift your fish out with a net once you're certain; left in the tank, it will start to spoil the water for the rest.
- Seal it in a bag or tub, press the air out and freeze it. If you'd like a vet to look for the cause of death, keep it cold in the fridge rather than frozen.
- Test the water the same day for ammonia, nitrite, pH and temperature, and watch the remaining fish closely.
- Decide by size. Private cremation makes sense for a koi or big goldfish; a small tank fish is usually better buried, potted under a plant or cremated communally.
- Call a provider and ask what they'd return for your fish's length and weight, and get the total in writing.
Remembering your fish in Centennial
Front Range weather in Centennial swings fast: January nights drop into the teens, July afternoons reach about 90, and spring can bring snow one day and sun the next. Hailstorms roll through in late spring and summer. If your pet dies during a storm, there is no need to drive in it. Keep them indoors on a blanket, in the basement or a shaded room, until the weather clears.
try the free planning tools, Every option Centennial families choose between is on the services page, or see how other readers answered in our polls, look through our guides and the blog. Close to Centennial we also cover Lakewood, Aurora, Colorado Springs and Thornton; the full list for Colorado and for the United States is a click away.
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Free tools to help you plan
Cremation cost calculator
Estimate a realistic price range for your pet's size, location and the type of cremation.
Ashes weight estimator
See roughly how much ash to expect back, by species and body weight.
Aftercare options compared
Compare private, communal and water cremation with burial on cost, timing and what comes home.
Questions people ask
Does the Centennial climate change what I should do first?
Only the timing. In July, with highs near 90°F, cool the body and book collection the same day. In January, February, March, November and December, when lows sit below freezing, a home burial may have to wait for a thaw, so cremation with ashes returned keeps your options open.
Can a provider from a neighbouring town collect from Centennial?
Usually yes. Parker is about 8 miles away, Englewood is about 8 miles away and Littleton is about 8 miles away, all inside a normal collection radius. Get the mileage written into the quote so there is no surprise on the day.
Why does the Centennial page quote a human cremation rate?
Because it is the best local signal we have. NFDA 2024 Cremation & Burial Report state projections (via Occasional Sage) (2024) reports about 77.4%[1] of Colorado residents are cremated. There is no official pet equivalent, and inventing one would be worse than quoting a real, clearly labelled number.
Where are the providers that serve Centennial actually based?
Some are local, and some run from Aurora, about 10 miles away. That is normal for a city this size. What matters is the collection time they quote for Centennial and whether the drive is priced into the total, so ask both up front.
Does Colorado regulate pet crematories?
Only nine US states have laws written specifically for pet crematories, and only two require written documentation for consumers. Elsewhere, it's up to you to ask. For a fish, ask in writing whether the cremation is private, communal or partitioned, how your fish is identified and what will be returned for its size.
Can two fish be cremated together?
Yes, if you'd like their ashes mixed. Tank mates or a pair of koi that always swam together are sometimes cremated side by side, and many families find that comforting. Tell the provider clearly, because a private cremation normally means one animal. If you'd rather keep each fish's ashes separate, bag and label them individually before freezing and ask whether separate cremations cost more.
Sources and our estimates
- [1] The NFDA projected Colorado's cremation rate at 77.4% for 2024. NFDA 2024 Cremation & Burial Report state projections (via Occasional Sage), 2024.
- [2] About 10 million US households keep freshwater fish. American Pet Products Association (APPA) 2025 National Pet Owners Survey release, 2025.
- [3] 13% of UK households keep an indoor fish tank. UK Pet Food (formerly PFMA) Pet Population 2026, 2026.
- [4] Embrace notes cremated remains typically weigh about 3-5% of the pet's original body weight. Embrace Pet Insurance - Bury or Cremate Your Dog? Costs, Pros & Cons, 2025.
- [5] CareCredit's pet cremation guide lists US communal cremation at $45-$75 and private at $100-$175 for pets up to 30 lb. CareCredit (Synchrony) - How Much Does Pet Cremation Cost? (Sept 2023), 2023.
- [6] Engraved pet garden stones start at about $39 at the median of three US sellers. Our estimate: median of starting prices [$38 Adirondack, $38.95 Memorials.com, $89.99 Comfort Co.]. How we calculate.
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