Fish aftercare services, sized to the fish you're saying goodbye to
A 15 lb koi and a 3 gram betta need very different plans. Pets usually return about 3-5% of body weight[1] as ash, so we'll help you pick the service that actually makes sense for your fish.
- Every option explained with typical prices
- Honest guidance for very small fish
- Help arranging collection of a large koi
Before you pick a service
Start with two questions: how big, and what do you want to keep?
Most pet aftercare pages assume a dog or a cat. Fish don't fit that mold. A mature koi can weigh as much as a small terrier, while most aquarium fish weigh less than a teaspoon of sugar. The service that suits one can be pointless for the other.
So before you compare prices, answer two things. Roughly how long and heavy was your fish? And do you want something physical back, like ashes for an urn, or is the goodbye itself what matters? The answers point you toward one of the six services below.
Free tool
Aftercare options compared
Compare private, communal and water cremation with burial on cost, timing and what comes home.
Not sure how big your fish was? Measure from nose to the fork of the tail. As a rough guide, a 12-inch koi weighs about a pound and a 24-inch koi around 8 lb, though body shape varies a lot between varieties.
Service 1
Private cremation for koi and large pond fish
In a private cremation, your fish is cremated alone and everything returned is theirs. This is the service that makes most sense for a koi, a large pond goldfish, a big oscar or an arowana, because there's enough bone to give you a real amount of ash.
Embrace Pet Insurance puts US prices across all pet sizes at communal $30-200; private $100-500+[2]. Fish sit at the bottom of the weight scale, so you should expect the lower end, plus any collection or urn charges. Many families get ashes back in about 5-10 days[3].
Service 2
Communal cremation when you don't need ashes returned
In a communal cremation, several animals are cremated together and no ashes come back. They're usually scattered in a memorial garden. For fish of any size, it's the lower-cost, dignified alternative to flushing or the trash, and it spares you digging a grave in frozen ground or a rented yard.
PetMD puts US communal cremation at communal $50+; private $100+[4]. Some vets and pet shops will take a small fish for communal cremation along with other pets. It's worth asking your local aquatic store whether they have an arrangement.
How big is the gap? Our estimate, from published price lists in eight countries, is that private cremation typically costs about twice as much as communal for the same weight band, with a range from 1.25 times to over 5 times[5]. The UK competition regulator's pricing work found much the same spread, with communal cremation two to five times cheaper than the individual equivalent.
Service 3
Symbolic cremation for tiny aquarium fish
A betta, guppy, platy or tetra weighs a few grams. At the usual ratio, that's a fraction of a gram of ash, and it may not be possible to gather anything that is clearly your fish's own. An honest provider will say so before you pay.
Some crematories offer what they call a symbolic or token return: a small sealed vial or card with a certificate, knowing the contents may be mostly from the chamber. If that feels right, it can be a lovely thing to keep. If it doesn't, choose a burial or a memorial instead. The symbolic ash yield guide explains what to ask.
Service 4
Water cremation, a gentle fit for an aquatic pet
Water cremation, also called aquamation or alkaline hydrolysis, uses warm water and alkali instead of flame. As the Veterinary Sustainability Alliance's aquamation explainer describes, pet systems run for about 12–20 hours at 200°F[6], and each pet uses roughly the water of 1–3 pet baths[7]. What's returned is bone mineral, similar to ash but often whiter and finer.
Many fish keepers like the idea of a water-based goodbye for a water animal. It's not offered everywhere. For people, water cremation is legal in only some US states, as the Cremation Association of North America's state list shows, and pet providers are spread just as unevenly, so ask early. Prices vary too: Embrace lists aquamation within the same broad bands as flame cremation. If environmental impact matters to you, read evaluating environmental claims in fish aftercare before you choose.
Had you heard of water cremation (aquamation) before today?
Tap an answer to vote and see how others answered. Anonymous.
Service 5
Garden or planter burial, done properly
Burial is a very common goodbye for small fish, and it's a legitimate choice for large ones too. A UK national survey of owners, covering all pets, found 27% home burial; 2% burial elsewhere[8]. We don't dig graves, but we can point you to local rules and to cemeteries that accept fish.
- Dig at least a foot deep for small fish and deeper for a koi, so foxes and raccoons leave it alone.
- Keep well away from the pond, wells, streams and vegetable beds. In England, the Environment Agency's guidance on animal burials sets minimum distances from wells, boreholes and springs.
- Wrap in paper, cotton or a cardboard box, never plastic.
- If the fish died of disease, bury it far from other fish or choose cremation instead.
No garden? A large pot with a new plant works well for a small fish. Our guide to bio memorials after fish loss covers plantable options.
Service 6
Water-themed keepsakes and pond-side memorials
Keepsakes are usually made by separate makers after the cremation, not by the crematory. Popular choices for fish include a glass paperweight with a swirl of ash, a pendant holding a pinch, a carved stone beside the pond, or a new water lily planted in the fish's name. One industry report puts personalized urns in the US at about USD 50–1,000+[9].
Before ordering anything, check how much ash you actually have. The ashes sharing planner shows how many pendants or keepsake vials one fish can fill, and our memorial ideas for fish collects options that need no ash at all.
Side by side
Which fish aftercare service suits which fish?
| Service | Suits | What comes home | Typical US price |
|---|---|---|---|
| Private cremation | Koi, large goldfish, big tropicals | Your fish's ashes only | From about $100 |
| Communal cremation | Any fish, when ashes aren't needed | Nothing | From about $30 to $50 |
| Symbolic return | Bettas and small tank fish | A token vial and certificate | Ask; often the provider's minimum |
| Water cremation | Any size, where available | Fine white remains | About $80 to $450 |
| Garden or planter burial | Small fish, or any fish if rules allow | A place to visit | Little or nothing |
Still weighing it up? Tell us about your fish and we'll email the options local providers offer. You can also see the full range of costs on the cremation cost calculator.
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.
Which memorial feels most like 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 sharing planner
Split ashes fairly between family members, keepsake urns and jewelry.
Questions people ask
Do pet crematories accept fish?
Many do, especially for larger fish such as koi. A few decline very small fish because there's nothing meaningful to return. When you call, give the length and rough weight, say whether you want ashes back, and ask what they would expect to return. That quickly tells you whether they're used to aquatic pets.
Can someone collect a large koi from my pond?
Some providers collect from homes, usually for an extra fee, but most won't net a fish from the pond for you. Remove the koi yourself, wrap it in a damp towel, bag it and keep it chilled or frozen until collection. If you can't lift it safely, say so when you book.
Is water cremation available for fish?
Often, yes. Where pet aquamation is offered, small animals can usually go through the same process as cats and small dogs, but confirm fish specifically. Availability depends on where you live, so ask your nearest providers, or send us your location and we'll check which ones serve you.
What's the cheapest respectful option for a small fish?
A garden or planter burial costs almost nothing and gives you somewhere to visit. If you'd rather not bury, ask your vet or local aquatic store whether they send small pets for communal cremation, which is usually the lowest-cost cremation available.
Can I be present at my koi's cremation?
Some providers offer a witnessed cremation, where you can be there as the process begins. It isn't universal and usually costs more. If it matters to you, ask on the first call, because it affects scheduling and which provider you can use.
Sources and our estimates
- [1] 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.
- [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] A US aftercare guide says many families receive private cremation ashes within about one to two weeks, with 5-10 days commonly quoted. Funeral.com - Pet Cremation Timelines: How Long Until Ashes Are Returned, 2026.
- [4] PetMD says US group (communal) cremation costs from about $50 and private cremation from about $100. PetMD - Pet Euthanasia: How Much Does It Cost? (July 2025), 2025.
- [5] The median price multiple of private (ashes returned) over communal cremation across 8 markets is about 2.0x, ranging from 1.25x (Tokyo) to 5.2x (Auckland). Our estimate: median(private_price / communal_price) same weight band: US CareCredit 51-70 lb midpoints (250/75) = 3.33x; Auckland 15-25 kg (445/85) = 5.24x; Norway 1-20 kg (3790/1190) = 3.18x; Singapore 10-20 kg (480/260) = 1.85x; Ontario 25-250 lb (549/279) = 1.97x; Tokyo 20-30 kg (38500/30800) = 1.25x; France 20 kg midpoints (200/95) = 2.11x; Germany range midpoints (270/145) = 1.86x. How we calculate.
- [6] 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.
- [7] Aquamation uses about the same water per pet as 1–3 pet baths. Veterinary Sustainability Alliance — Aquamation, 2024.
- [8] In the same CMA survey, 27% of UK owners buried their pet at home and 2% used a pet burial company elsewhere. UK Competition and Markets Authority - Veterinary services for household pets, Provisional decision report Part A (Oct 2025), 2025.
- [9] Personalized pet urns range from about USD 50 to more than USD 1,000. Astute Analytica via GlobeNewswire — Global Pet Preservation Services Market to Hit USD 112.7 Million by 2032 (Apr 2, 2024), 2024.
Ask about fish aftercare in your area
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.