Last Updated: 30/05/2025
Siamese Fighting Fish Facts
Wondering about getting Siamese Fighting Fish? Take a look at some facts and myths about Bettas!
Author: Dr Teagan Lever BVSc (Hons)
Reading Time: 10 minutes - short read
If there were ever a fish to be crowned royalty, we think it would be the Siamese fighting fish. These incredible fish, also known as betta (short for betta splenden), are renowned for their vivid colours and ethereal fins, which can take on forms that resemble everything from a flowing veil to an elephant's ear.
But while beautiful, there are a lot of myths that surround the Siamese fighting fish. So before you decide to take one of these fish home, brush up on some knowledge, bust some of said myths, and learn how to better care for your betta!
In this article
- Do they actually fight?
- Can they live in tink tanks?
- Do they need a filter?
- Can they really breathe air?
- Can they live in a vase with a plant?
- Blowing bubbles at the surface is good?
- Are baby betta raised by their dads?
- Do they live long?
- Betta cannot live with other species?
- The brighter they are, the happier they are?
1. "It's not just a name - they really do fight"
FACT
We probably didn't need to tell you this one. Captive Siamese fighting fish were bred especially for fighting, and in the past, grew in popularity to the point where the King of Thailand started licensing fights and collecting these fish around 1840. And yes, even the females fight!
2. "Siamese fighting fish can live in tiny tanks, because they live in little creeks in the wild"
MYTH
This must be the biggest misconception out there! When searching for a tank for their betta, people often believe that their fish will be able to live a tiny bowl or even a cup, because betta live in shallow or pockets of water in the wild (and tiny tanks in the pet store). While this may be true, these creeks and rice paddies stretch for miles and miles, giving wild betta plenty of room to move.
If you're looking for a tank for your Siamese fighting fish, it's best to ignore the size of the tank you may have bought your fish in at the pet store - for a single betta, you need at least a 9.5 litre aquarium (but ideally 20 litres!) for them to be happy.
3. "Betta fish don't need a filter because in the wild they live in muddy water"
MYTH
Muddy water doesn't necessarily mean dirty water. You're better to cycle the tank and keep it clean like any other fish tank, including a weekly 10% water change. Fin, tail and mouth rot will infect them otherwise. Betta fish also don't like swimming against currents, so you'll need a low flow filter. Plus, betta splenden are much different to their wild cousins - they have been selectively bred, so they don't appreciate the same conditions.
4. "Bettas can breathe air, unlike other fish"
FACT
They totally can, and we think that's awesome! Bettas both in captivity and in the wild have a special organ known as the labyrinth organ, which allows them to breathe air from the surface. This is how they survive in waters with low-oxygen content, such as shallow rice paddies or stagnant ponds.
5. "Betta fish can live in a vase with a plant, eat the plant waste, and the plant will keep the water clean, creating a natural cycle"
MYTH
This is not true for many reasons, but the most important two are that your Siamese fighting fish needs room to swim (more room than a vase can provide, as we've already learned), and that they are omnivorous. This means that your fish cannot solely eat the plant's waste, as they need insects and other foods in their diet.
6. "A betta blowing bubbles at the surface of the water is a good thing"
FACT
It's also a good indication that they are happy in their tank, as they now consider it safe and healthy enough to breed in - you see, the bubbles are a nest! But no bubbles are not a cause for concern - if your tank filter has any sort of current that the fish notices, he may be less inclined to build a nest.
7. "Baby betta are raised by their dads"
FACT
In fact, male betta will chase away the female of a breeding pair once eggs have been spawned (in case she eats the eggs!), and will diligently look after the eggs to make sure they don't fall to the bottom of the tank. Father of the year, much?
8. "Siamese fighters don't live long... that's why mine didn't last long"
MYTH
While some Siamese fighting fish owners claim to have given their betta the bare minimum in care and still had it live for a year or two, betta can actually live up to five years with proper care.
9. "Betta fish cannot live with other species"
MYTH
It's a myth, but of the good kind! With the right introductions, betta can live in what's called a community tank. Some other fish species bettas tend to get along with are tetras, guppies, shrimp, snails, platies and loaches. Rest assured however, that betta are not schooling fish - they are more than happy to live on their own.
10. "The brighter my betta, the happier they are"
FACT
A vivid betta is a happy betta - but betta do change colours throughout their life, such as the point where they are fully mature, or as a response to stress or disease. But as a general rule of thumb, yes: if your betta is looking radiant, they are likely quite happy...and doesn't everyone want that from their pet?
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Our experts continually monitor the health and wellness space and we update our articles when new information becomes available.
Wed Mar 12 2025
Edited by Dr Teagan Lever BVSc (Hons)Dr Teagan Lever BVSc (Hons)
Head Veterinarian, BVSc (Hons)
Pet Circle's Head Veterinarian, Dr Teagan graduated from the University of Queensland in 2010 and went on to work in small animal and mixed practice in various locations around QLD & ACT before joining Pet Circle in early 2016. Dr Teagan has special interests in dermatology, nutrition and preventative health care. She feels privileged to witness the special bond people share with their pets on a daily basis and enjoys forming lasting relationships with pet parents and their fur children.
