The fish aftercare blog: clear answers for the moment you need them
Each article answers one question in its opening lines, then explains the detail. Start with the first-steps posts if your fish has just died, or with costs and memorials if you have a little more time.
By the Fish Cremation & Memorial Services editorial team · Updated September 24, 2026 · 4 min read · Sources
- One question per article, answered up front
- Koi, pond goldfish, bettas and tank fish covered
- Sourced figures and no sales pressure
Finding your answer
Which fish aftercare article answers your question?
Match your question to one of the groups below and you'll usually have your answer within a minute. If you need a whole topic explained rather than a single question, our in-depth fish aftercare guides cover ash yields, pond markers, bio memorials and tank-side rituals.
- Right now: what to do when a fish dies, why flushing causes problems, how to bury a fish and what to check when a koi dies without warning.
- Deciding and paying: cremation costs, private or communal, and the questions to put to a provider.
- Practical steps: moving a large koi, freezing a small fish and planning ahead for an old one.
- Remembering: memorial ideas that need little or no ash.
- Coping and conscience: grief after a fish dies and how to judge green claims.
Latest articles
Practical, honest articles on costs, choices and remembering.
What fish cremation costs, and how to compare quotes line by line
What cremating a koi or goldfish costs in the US, UK, Australia and Canada, which extras inflate the bill, and a checklist for comparing written quotes.
Eco-friendly aftercare for fish: which green claims hold up?
Is aquamation greener for a koi? Are biodegradable urns what they claim? How to judge eco claims in fish aftercare, and the bigger risk: releasing live fish.
Grieving a fish is real grief, and you're allowed to feel it
Missing a koi, goldfish or betta more than people expect? Why fish grief is real, how to handle guilt over the water, helping kids, and free support lines.
How to bury a pet fish so the grave stays peaceful
Burying a goldfish, betta or koi? How deep to dig, where the grave should go, what to wrap it in, what to do in frozen ground, and planter burial for renters.
Your koi died suddenly: what to check today
A koi died without warning. Check oxygen, ammonia, nitrite, pH and KH, new arrivals, predators and runoff, keep the body chilled for a vet, then plan aftercare.
Memorial ideas that actually suit a fish
Memorial ideas that suit fish: gyotaku prints, water lilies, pond stones, glass and pendants that use a pinch of ash, kids' projects, and what each one costs.
Planning ahead for an old koi or goldfish, while there's time
Planning ahead for an elderly koi: choosing cremation or burial early, who inherits the pond, freezer space, a budget and the photos to take while you can.
Private or communal cremation for your fish: which one makes sense?
Private, partitioned or communal cremation for a koi or goldfish? What each one means, when private is worth paying for, and how to check what you get back.
What to ask a crematory before you hand over your fish
Do they take fish? How much ash will a koi leave? How do they prove it's private? What to ask a crematory, and what good and evasive answers sound like.
Getting your fish, even a 15 lb koi, from pond to provider
How to net a large koi, wrap and chill or freeze a fish, drive it to a crematory or vet in summer or winter, and get the ashes home safely, even by mail.
What to do when your fish dies, one step at a time
Your fish has died. How to be sure, get it out, protect the tank or pond, store the body, choose ashes or burial, and tell the kids, without rushing.
Why you shouldn't flush a dead fish, and what to do instead
Flushing a dead fish feels tidy, but it isn't harmless. Where a flushed fish really goes, the disease and septic worries, and kinder options that cost little.
If it just happened
What should you do first when a fish has just died?
Four newer articles, listed in the grid below, deal with the first few hours: confirming the death, getting the body out of the water, protecting the fish still living in the tank or pond, and choosing between the freezer, a burial or a provider. One is written for pond keepers whose koi died suddenly, with the water checks to run the same day.
One more piece deals with the reflex many of us grew up with: the toilet. Flushing isn't the gentle option it seems, and live fish released into drains or lakes are a real problem. Minnesota's natural resources agency is blunt about it, advising owners to never release[1] unwanted goldfish, which can grow far larger in the wild than anyone expects.
Would you keep your fish in the freezer while you decide what to do?
Tap an answer to vote and see how others answered. Anonymous.
Deciding and paying
What does fish cremation cost, and is private worth it?
Almost every fish lands in a provider's lowest weight band, so a goldfish can cost close to what a small cat does. One US pet insurer puts communal cremation at about $30 to $200 and private at about $100 to $500 or more[2]. Our article on comparing written quotes for fish cremation shows the line items that push a total up.
Free tool
Cremation cost calculator
Estimate a realistic price range for your pet's size, location and the type of cremation.
Whether private is worth paying for depends on your fish's size. Private vs communal cremation for fish explains why a big koi and a betta point in opposite directions. Before you agree to anything, read our questions to ask a fish cremation provider.
A few minutes of comparing is worth it. When the UK competition regulator surveyed pet owners, 89%[3] of those who bought a cremation had not compared providers, and only 52%[4] recalled being given price information. By our estimate, that means only about 6% of all bereaved UK owners compare providers before buying[5].
Practical steps
How do you move a large koi, or plan ahead for an old one?
Lifting a 15 lb koi out of a pond and getting it to a provider is a different job from bagging a guppy. Transport and logistics when a fish dies covers nets, coolers, ice, drop-offs at a vet and how ashes usually travel back to you.
Koi commonly live 30-40 years[6], and goldfish typically reach 6-7 years[7], so many keepers have time to think before a loss. Our pre-planning article for fish aftercare covers who looks after the pond if you move, what to write down and how to budget without buying anything in advance.
Remembering
What can you keep when a fish leaves so little ash?
Plenty. A lot of fish memorials need no ash at all: a painting or a traditional gyotaku-style print, a water lily planted in the fish's name, a smooth stone by the pond. When there is a little ash, it goes a long way. An ashes pendant holds a pinch (at most about a teaspoon)[8], and glass memorials use only 1/8–1/2 tsp[9].
Our memorial ideas for fish article gathers options by budget and by how much ash you have. To see how far a koi's ashes could stretch across a family, try the ashes sharing planner.
Which memorial feels right for a fish?
Tap an answer to vote and see how others answered. Anonymous.
Coping and conscience
Is it normal to grieve a fish this much?
Yes. The daily routine of feeding, watching and tending a tank or pond builds a real bond, and its sudden absence is felt. In the RSPCA's large survey of bereaved owners, 66.9%[10] were surprised by how intense their grief was. And fish keepers know the phrase "it was only a fish" all too well. Our article on grief after losing a fish has practical ways through the first weeks.
Some readers also want to know which choice is gentlest on the planet. It's a fair question: 40%[11] of consumers raise environmental concerns about pet aftercare in one market analysis. Evaluating environmental claims in fish aftercare compares flame, water cremation and burial, and explains why the bigger risk for fish is releasing them alive.
Most fish keepers don't need a lecture. They need one clear answer and permission to take it seriously.
When you're ready
How can we help you take the next step?
If you'd like options rather than reading, send us a few details: the kind of fish, its rough size and your area. We reply by email with providers and prices that serve you. We don't cremate or collect fish ourselves, and there's no obligation. For local rules and providers you can also browse the locations directory.
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.
Would you keep your fish in the freezer while you decide what to do?
Tap an answer to vote and see how others answered. Anonymous.
Did you (or would you) compare more than one provider?
Tap an answer to vote and see how others answered. Anonymous.
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 sharing planner
Split ashes fairly between family members, keepsake urns and jewelry.
Aftercare options compared
Compare private, communal and water cremation with burial on cost, timing and what comes home.
Questions people ask
How long can I wait before deciding what to do with my fish?
Once the body is out of the water, a small fish wrapped and sealed in the freezer will keep for weeks, which gives you time to decide calmly. A large koi needs a chest freezer or a cooler with plenty of ice. If you want a vet to find out why the fish died, chill it in the fridge instead and call that day.
Do pet crematories take fish?
Many do, especially those that already handle small pets such as birds and hamsters. Some accept fish only for communal cremation. Call ahead, describe the kind and size of fish, and ask whether they expect to return any ashes. Your vet or local aquatic store may already know which providers accept fish.
Is it cheaper to cremate a fish than a dog?
Usually a little, but not by as much as you'd think. Fish fall into the smallest weight band, and most providers charge a minimum because running the chamber costs roughly the same for any small animal. Home collection, urns and keepsakes add to the total, so ask for a written price.
Can I bury a fish in my garden?
In most places, yes, on land you own. Dig well away from the pond, wells and vegetable beds, deep enough that raccoons and foxes won't dig it up, and wrap the fish in paper or cotton rather than plastic. If the fish may have died of a disease, keep it well away from other fish or choose cremation.
Who writes these articles?
They're written and checked by the editorial team behind this independent guide. We research each figure and link it to its source on our research page, and we don't publish reviews, ratings or customer stories we can't verify. If you spot something wrong, tell us through the contact form and we'll correct it.
Keep reading
What to do when your fish dies
The first hour, step by step, for tanks and ponds.
In-depth fish aftercare guides
Ash yields, pond markers, bio memorials and rituals.
Fish aftercare services
Every option, with typical prices and who it suits.
What other fish keepers chose
Live, anonymous results from our reader polls.
Sources and our estimates
- [1] 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.
- [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] 89% of UK owners who bought a pet cremation did not compare different providers; 9% did. UK Competition and Markets Authority - Veterinary services for household pets, Provisional decision report Part A (Oct 2025), 2025.
- [4] Only 52% of UK cremation buyers recalled receiving information on the price of the service and different packages. UK Competition and Markets Authority - Veterinary services for household pets, Provisional decision report Part A (Oct 2025), 2025.
- [5] Only about 6% of all bereaved UK pet owners compare cremation providers before buying. Our estimate: 67% cremate x 9% compared = 6.0%. How we calculate.
- [6] Nishikigoi (koi) typically live about 30 to 40 years depending on their environment. All Japan Nishikigoi Promotion Association - Ancient koi 'Hanako', 2024.
- [7] Goldfish typically live 6-7 years, usually grow 5-8 inches but can approach 2 feet and 6 pounds; releasing them into Minnesota waters is illegal. Minnesota DNR - Goldfish (Carassius auratus) invasive species page.
- [8] An ashes pendant holds only a pinch of cremated remains (the retailer says at most about a teaspoon; most pendants hold far less), and most come with a small funnel fill kit. Memorials.com – Pet ashes necklaces, 2026.
- [9] Ashes-in-glass pet memorials use only about 1/8 to 1/2 teaspoon of ashes. Funeral.com – Ashes in Glass for Pets, 2026.
- [10] 66.9% of respondents were surprised by how intense their grief was after losing a pet. RSPCA — Pet Loss Survey Results, 2026.
- [11] 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.
Tell us about your fish
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.