The betta (or fighter fish) is one of India's most loved aquarium fish — brilliant colour, big personality, and happy on its own. But bettas are also one of the most mis-sold fish, often kept in tiny bowls without a heater or filter. Get a few basics right — a proper tank, warm clean water, and the correct food — and a betta will reward you with years of vivid colour and character. This guide covers everything you need to keep a betta thriving in Indian conditions.
Quick answer: Keep a single male betta in a heated, filtered tank of at least 10 litres (ideally 15–20 L), with dechlorinated tap water at 25–28°C and a gentle filter flow. Feed a betta-specific floating pellet once or twice a day with the occasional bloodworm treat, and change 25–30% of the water weekly. Never keep a betta in an unheated bowl.
Why bettas are special (and commonly mis-kept)
Bettas have a labyrinth organ that lets them breathe air from the surface, so they survive in low-oxygen water that would kill other fish. That single trait is why they are sold in tiny cups and bowls — but surviving is not thriving. A betta in a small, unheated bowl lives a fraction of its potential lifespan. In a warm, clean, filtered tank, a healthy betta lives 3–5 years with far better colour and activity.
The right tank for a betta
Forget the bowl. A betta needs a minimum of 10 litres, and 15–20 litres makes water quality dramatically easier to keep stable — important in warm Indian rooms where small volumes swing fast.
Bettas have long, heavy fins and are weak swimmers, so they need a gentle filter flow — a strong current exhausts them. A sponge filter or a hang-on-back filter baffled down to a soft flow is ideal. A lid is essential too: bettas are jumpers.
Setting up your first tank? Follow our beginner fish-tank setup guide for India.
Heating: the step most betta keepers skip
Bettas are tropical fish from Southeast Asia and need a stable 25–28°C. This is the single most overlooked part of betta care in India. While many rooms are warm enough in summer, AC rooms, winters across the north, and cool nights drop the water below the comfort zone — and a cold betta becomes sluggish, stops eating, and is far more prone to disease.
A small thermostatic heater sized to your tank keeps the temperature steady. Add a thermometer so you can see it at a glance.
Water care for bettas in India
Bettas are sensitive to poor water, so this is where most problems start — and end.
- Always dechlorinate tap water. Chlorine and chloramine in Indian municipal water are toxic to bettas and damage their delicate fins. Treat every bucket of new water before it goes in.
- A betta-specific conditioner neutralises chlorine, supports the slime coat and fins, and helps keep pH steady.
- Aim for pH around 7 and keep it stable — sudden swings stress bettas more than the exact number.
Betta water conditioner → | Anti-Chlorine dechlorinator →
Cycle the tank first. Before the betta moves in, run the tank for 2–4 weeks (or use a bacteria starter) to build the beneficial bacteria that keep ammonia at zero.
What to feed a betta
Bettas are carnivores — in the wild they eat insects and larvae, so their diet should be protein-rich, not plant-based flake. A quality floating betta pellet should be the staple, with treats for variety.
- Staple: a betta-specific floating pellet, 2–4 pellets once or twice a day.
- Treats: bloodworm a couple of times a week for colour and condition.
- Golden rule: feed only what your betta eats in about two minutes. Bettas beg constantly — overfeeding causes bloating, constipation, and fouled water.
Betta floating pellets → | Bloodworm treat →
Tank mates: can a betta live with other fish?
Male bettas are territorial — the name “fighter fish” is earned. Never keep two males together, and never house a male and female except briefly for supervised breeding. In a larger tank (20 L+), a single male can sometimes share space with peaceful, non-nippy, non-colourful tank mates such as corydoras, snails, or shrimp. Avoid fin-nippers like tiger barbs and anything bright or flowing that a betta may mistake for a rival. Many bettas are happiest alone.
Common betta health problems
Almost all are linked to cold or dirty water, and most are preventable with stable heat and weekly water changes.
- Fin rot — ragged, receding fins from poor water; improve water quality and conditioning.
- Constipation / bloating — usually overfeeding; feed less and offer variety.
- Swim bladder issues — trouble staying upright, often diet-related; feed sparingly and consider a digestion-support food.
- Ich (white spot) — white grains, often after a temperature drop; stabilise heat and treat promptly.
Weekly betta care routine
- Weekly: change 25–30% of the water (always dechlorinated) and vacuum the substrate.
- Daily: feed sparingly and check the betta is active, with fins open and colour strong.
- Always: keep the heater on and the temperature steady at 25–28°C.
- Monthly: rinse filter media in old tank water, never under the tap.
View an aquarium gravel cleaner →
Frequently asked questions
Can a betta fish live in a bowl without a heater or filter?
It can survive for a while thanks to its labyrinth organ, but it will not thrive. For a healthy, long-lived betta, use a heated, filtered tank of at least 10 litres. An unheated bowl leads to stress, disease, and a short life.
What is the ideal water temperature for a betta in India?
25–28°C, kept stable. Many Indian rooms are warm enough in summer, but AC rooms and winters need a small heater to avoid the temperature dips that make bettas sluggish and sick.
What do betta fish eat?
Bettas are carnivores. Feed a betta-specific floating pellet as the staple, with bloodworm as an occasional treat. Feed only what they finish in about two minutes, once or twice a day.
How often should I change a betta's water?
In a filtered tank, change 25–30% weekly with dechlorinated water. Smaller or unfiltered setups need more frequent changes, which is another reason a proper 10–20 litre filtered tank is easier.
Can bettas live with other fish?
Never two males together. A single male may share a larger tank with peaceful, non-nippy companions like corydoras, snails, or shrimp, but many bettas do best alone.
Where can I buy betta food and care products online in India?
Fish Bazaar stocks betta essentials — floating pellet food, bloodworm treats, water conditioner, heaters, and tanks — online with delivery across India, so you can set up a proper betta home without hunting for a local shop.
Related care guides
Ready to give your betta a proper home? Explore betta-friendly tanks, heaters, water conditioners, and food at Fish Bazaar, with delivery across India.
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