Betta care basicsComplete guide
Betta Fish Care: The Complete Guide for Beginners
Everything a new betta keeper needs: tank size, heating, cycling, feeding and the myths that kill fish. Written from four tanks, not from a care sheet.

Founder and editor, Bunstay
Keeping bettas for 9 years · 4 tanks · Riverview, Florida
I’m Bun Berka. I keep bettas in Riverview, Florida, and I write everything on Bunstay.
I grew up in Rabat. The pet stalls there sold goldfish in glass jars, and I had one as a kid, and it died the way those fish always die. I got my first real tank at fifteen. Goldfish again, badly filtered, and I learned water chemistry by getting it wrong for about a year. I moved to the United States in 2014 and didn’t keep fish at all for three years.
In 2017 I bought a red veiltail betta at a big-box store, along with the one-gallon kit the staff recommended. He lasted six weeks and died of ammonia burns and fin rot. I had followed the instructions on the box exactly.
What changed was finding out where he came from. I live about twenty minutes from Gibsonton, in Hillsborough County, which is the center of the American ornamental fish industry. Florida farms roughly 95% of the freshwater ornamental fish produced in this country. So I went to see the operations, and they were nothing like what I expected: controlled temperature, real filtration, water testing, staff who know exactly what they are doing.
Those fish leave the farm healthy. They die in the last mile, in the shipping cup, on the shelf, and in the bowl the customer takes home believing it is enough.
That is the gap Bunstay is built to close. I’m not a vet and I have no qualification in fish medicine. I’m someone with four tanks who reads the welfare literature, tests his water, photographs what actually happens, and says so when he doesn’t know something.
If you’re here because your betta is in a bowl and something feels wrong, you’re not the problem. You were told wrong, the same way I was.
Bun Berka holds no formal qualification in fish medicine or aquaculture, and this site never implies otherwise. His experience is practical: 9 years of keeping bettas, 4 tanks currently running, and a habit of reading the veterinary literature before writing about it. Where a question needs clinical expertise, our articles say so and point to an aquatic vet.
Care guidance on this site is tested here first. These are the setups our parameters, timings and photographs come from.
| Tank | Setup | Occupants |
|---|---|---|
| 10 gallon | Planted, sponge filter, 50 W heater | Male halfmoon, Zellij |
| 20 gallon long | Low-tech planted, baffled HOB filter | Female betta with pygmy corydoras |
| 5 gallon | Bare-bottom, sponge filter, adjustable heater | Quarantine and hospital tank |
| 5 gallon | Planted, sponge filter, floating plants | Male crowntail, Souss |
Email [email protected], or use the contact page. Corrections go to [email protected] and are always welcome.

Betta care basicsComplete guide
Everything a new betta keeper needs: tank size, heating, cycling, feeding and the myths that kill fish. Written from four tanks, not from a care sheet.
·6 min read

Tank setup and equipmentComplete guide
Bettas need at least 5 gallons, not a bowl. Here is what tank size actually changes, what welfare guidance says, and why the cup was never the plan.
·5 min read

Tank setup and equipmentComplete guide
A complete betta tank setup in order: what to buy, how to assemble it, how to cycle it, and when the fish actually goes in. Nothing skipped.
·5 min read

Water quality and maintenanceComplete guide
Target temperature, pH, GH, KH and the numbers that actually kill fish. What to test, how often, and what to do at each reading.
·5 min read

Water quality and maintenanceComplete guide
Fishless cycling explained in order: what to dose, what to test, what each reading means, and how to tell when the tank is genuinely ready for a betta.
·4 min read

Feeding and nutritionComplete guide
Betta fish food explained: which pellets, how many, how often, which live foods help, and why the amount on the packaging is usually far too much.
·3 min read
Types, behaviour and breedingComplete guide
Every common betta tail shape and colour pattern, what the names actually mean, and which types need more care than the shop will tell you.
·4 min read
Types, behaviour and breedingComplete guide
Which tank mates a betta tolerates, which are sold to you and fail, and why the honest default is a tank with one fish in it.
·4 min read
Tank setup and equipmentComplete guide
Yes, and here is why room temperature is not enough. Target range, how to size a heater, and why stability matters more than the exact number.
·3 min read
Betta care basicsComplete guide
Three to five years in good conditions, months in bad ones. What shortens a betta life, what extends it, and why your fish is already a year old.
·4 min read
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