Cremation, burial or water cremation: which suits your fish?
Every option can be right for some fish. With pet water cremation using roughly the water of 1–3 pet baths[1], even the eco choice is less exotic than it sounds. Set your priorities and see how each ranks.
- Five options ranked by what matters to you
- Pros, cons and price ranges for each
- Honest about what very small fish need
Aftercare options compared
Move each slider to show what matters most to you. The options re-rank as you go. There is no wrong answer.
1. Home burial
91% match
Typical US cost: Little direct cost (your time, tools, maybe a casket)
Good for
- Chosen by about 27% of UK owners
- A place to visit in your own garden
- Easy to hold a goodbye at home
- No crematorium involved
Keep in mind
- Local rules on depth and distance from water apply
- You may move house one day
- Not an option for renters or some areas
2. Water cremation (aquamation)
78% match
Typical US cost: $80–$450
Good for
- About a tenth of the carbon footprint of flame cremation
- Your pet's ashes are returned
- Uses water and alkali instead of flame
Keep in mind
- Fewer providers, so you may travel
- Cycle takes 12–20 hours
3. Private cremation
71% match
Typical US cost: $100–$175
Good for
- Your pet's own ashes come home
- Keep, scatter, bury or share them later
- Often 5–10 days to return
Keep in mind
- Uses fuel and emits CO2
- Costs more than communal
4. Pet cemetery burial
62% match
Typical US cost: $400–$600
Good for
- A permanent, cared-for place to visit
- Often includes a graveside service
- Stays put if you move
Keep in mind
- The most expensive option
- Plot fees and upkeep may continue
5. Communal cremation
56% match
Typical US cost: $30–$200
Good for
- Lowest cost option
- Nothing more to arrange afterwards
Keep in mind
- Ashes are not returned
- Little room for a personal goodbye
Match scores are our own guide to how well each option fits the priorities you set, not a rating of providers. Costs are for a pet under 30 lb (US).
Source: CareCredit (Synchrony) - How Much Does Pet Cremation Cost? (Sept 2023); Embrace Pet Insurance - Bury or Cremate Your Dog? Costs, Pros & Cons; National Geographic — The environmental toll of cremating the dead (2019); Bio-Response Solutions — PET-550 Aquamation System product page; UK Competition and Markets Authority - Veterinary services for household pets, Provisional decision report Part A (Oct 2025)
Next step: Compare local providers and prices →
Using the comparison
How to rank the options for your fish
Move five sliders, each from "Doesn't matter" to "Very important": keeping costs low, keeping them close (ashes to keep or a grave to visit), environmental impact, speed and simplicity, and room for a ceremony. The tool reorders five options as you go, and each card shows a match percentage, a typical US cost and short "Good for" and "Keep in mind" lists.
There's no wrong combination. A family whose child has lost a first goldfish may care most about a small ceremony and hardly at all about ashes. A koi keeper may put ashes at the top. The ranking follows your priorities, not ours.
Free tool
Aftercare options compared
Compare private, communal and water cremation with burial on cost, timing and what comes home.
The options
The five aftercare options, seen from a fish keeper's side
| Option | What you keep | Rough cost | Suits |
|---|---|---|---|
| Private cremation | Your fish's ashes | About $100 to $175 | Koi and larger fish |
| Communal cremation | Nothing returned | About $30 to $200 | Any fish, when ashes aren't needed |
| Water cremation | Fine white remains | About $80 to $450 | Families wanting a gentler process |
| Home or planter burial | A place to visit | Little or nothing | Small fish, or where rules allow |
| Pet cemetery | A grave and marker | About $400 to $600 | Families wanting a permanent site |
These are the ranges the tool shows on a fish site. Private cremation and the cemetery plot use US figures for pets under 30 lb; communal and water cremation use Embrace's all-sizes figures of communal $30-200; private $100-500+[2], so a fish will usually sit at the low end. A pet cemetery burial is the costly outlier; for a dog, the US average is $831[3].
Two worked examples
Worked examples: a 20-year-old koi and a child's betta
A 20-year-old koi. The owners put "keeping them close" and "room for a ceremony" on Very important, cost and environment on Somewhat, speed on A little. Home burial still ranks first at 91%, with water cremation at 78%, private cremation at 75% and a pet cemetery at 69%. They'd like ashes to scatter around the pond's planting, not a grave near the water, so they choose between the second and third cards.
A child's betta. The parents set cost and ceremony to Very important and keeping them close to Doesn't matter. Home or planter burial comes out first at 97%, with communal cremation next at 67%, level with water cremation. That result is the tool being honest: a betta leaves almost no ash, so paying for private cremation buys very little that can be kept.
What would you choose for a fish you loved?
Tap an answer to vote and see how others answered. Anonymous.
Environmental impact
How the options compare on environmental impact
Water cremation, also known as aquamation, heats pets in an alkaline solution for about 12–20 hours at 200°F[4], as the Veterinary Sustainability Alliance's explainer describes. It's widely described as using far less energy than flame cremation. For many fish keepers it feels fitting that a water animal's farewell should involve water. Cost follows the same pattern as flame: at one US provider's posted price list, our calculation puts private aquamation at about 2.5 times the communal price[5].
Burial looks like the greenest choice for a tiny fish, and usually is. For a koi, burial near water carries risks: a decomposing body can affect groundwater and should never go near a pond, well or stream. In England, the Environment Agency's guidance on animal burials sets minimum distances from wells and springs for exactly this reason. Our article on evaluating environmental claims in fish aftercare looks at the numbers behind common claims, and the bio memorials guide covers plantable options.
40%[6]
What's not on the list
Two options the tool leaves out on purpose
The tool doesn't rank flushing or releasing a fish into the wild, and that's deliberate. Flushing can send pathogens into waterways where sewer systems overflow, as our article on why you shouldn't flush a dead fish explains. Releasing a live fish can do real damage: Minnesota's natural resources agency says owners should never release[7] unwanted goldfish, which can grow to 2 feet in the wild.
Putting a fish in the household trash is allowed in some places, but it sits badly with most owners. When US pet owners were asked whether a trash bag was an acceptable container for a pet's body, the answer was clear: 64% reject trash bag[8]. A shoebox, a paper wrap or a cloth costs nothing and feels very different. If a fish must wait, freeze it and choose one of the five options when you're ready. Our services page explains each in more detail.
Keep in mind
What the comparison can't decide for you
The tool can't check which options are offered near you; water cremation in particular is patchy. It can't know your local burial rules, your landlord's view, or whether the ground is frozen. And it can't weigh what your family will find comforting.
Use the ranking as the start of a conversation. Then check real prices with the cremation cost calculator, see how much ash to expect with the ashes weight estimator, or ask us what's available where you live.
Reader polls
What would you choose?
Vote anonymously and see how other readers answered. The results are live counts from people who visit this site, so they show real opinions, not a scientific sample.
What would you choose for a fish you loved?
Tap an answer to vote and see how others answered. Anonymous.
Had you heard of water cremation (aquamation) before today?
Tap an answer to vote and see how others answered. Anonymous.
If you had to decide today, which aftercare would you choose for your pet?
Tap an answer to vote and see how others answered. Anonymous.
Free tools to help you plan
Aftercare options compared
Compare private, communal and water cremation with burial on cost, timing and what comes home.
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.
Questions people ask
What is the most eco-friendly option for a dead fish?
For a small fish, a garden or planter burial away from water is usually the lightest-touch option. For a large koi, water cremation is often described as lower-impact than flame cremation. Communal cremation spreads energy use across several animals. Ask providers for evidence behind any green claims.
Is burial or cremation better for a koi?
Neither is right for everyone. Cremation lets you keep, share or scatter ashes and avoids burying a large fish near the pond. Burial gives you a place to visit but needs space away from water, and deeper digging for a big koi. If the koi died of disease, cremation is usually the safer choice for your other fish.
Can I bury a fish in a flower pot?
Yes, for small fish. Use a large pot, place the fish near the bottom wrapped in paper, and cover with plenty of soil before planting. A deep planter keeps pets and wildlife from disturbing it. It works well for renters and gives children something living to look after.
Is communal cremation respectful?
Yes. Communal cremation is a dignified process in which several animals are cremated together and the ashes are usually scattered in a memorial garden. You simply don't receive ashes back. For many fish, it's a respectful middle ground between burial and private cremation.
Sources and our estimates
- [1] Aquamation uses about the same water per pet as 1–3 pet baths. Veterinary Sustainability Alliance — Aquamation, 2024.
- [2] Embrace Pet Insurance lists US communal cremation at $30-$200, partitioned at $50-$250, private at $100-$500+ and aquamation at $80-$450. Embrace Pet Insurance - Bury or Cremate Your Dog? Costs, Pros & Cons, 2025.
- [3] CareCredit's 2025 cost study put the US national average for pet cemetery burial of a dog at $831 (range $659-$1,513). CareCredit (Synchrony) - How Much Does It Cost To Euthanize a Dog? (2025 ASQ360 procedural cost study), 2025.
- [4] Pet alkaline hydrolysis systems run at about 200°F at atmospheric pressure with a 5% alkaline solution for 12–20 hours. Veterinary Sustainability Alliance — Aquamation, 2024.
- [5] Private pet aquamation costs about 2.5 times communal aquamation at the same provider. Our estimate: mean of tier ratios 150/50, 200/75, 250/100, 350/150, 450/225. How we calculate.
- [6] Astute Analytica reports that 40% of consumers raise environmental concerns about pet aftercare choices. Astute Analytica via GlobeNewswire — Global Pet Preservation Services Market to Hit USD 112.7 Million by 2032 (Apr 2, 2024), 2024.
- [7] Minnesota DNR advises owners of unwanted goldfish to return them to a retailer, use a surrender event, rehome with hobbyists, or ask a veterinarian or pet retailer about humane disposal, never releasing them. Minnesota DNR - Goldfish (Carassius auratus) invasive species page.
- [8] 64% of US owners rated a trash bag as an unacceptable container for a deceased pet; 66.1% rated a blanket/shroud acceptable. Cooney, Kogan, Brooks, Ellis - Pet Owners' Expectations for Pet End-of-Life Support and After-Death Body Care, Topics in Companion Animal Medicine (2020), 2020.
See which options exist near you
Tell us what you need and where you are. We'll reply by email with clear options and prices so you can decide in your own time.