Dog Breed Info Center(R) DBIC

Siamese Fighting Fish

Information and Pictures

Close Up - A light blue Siamese Fighting Fish

Male betta fish named Rockamolly

Scientific Name

Betta Splendens

Type

Anabantids

Family

Belontiidae

Subfamily

Macropodinae

Other Names
  • Betta
  • Siamese Fighter
Minimum Tank Size

1 gallon—Betta enthusiasts stress that a gallon is the absolute minimum. It is not for exercise but for heat; it is impossible to heat any tank smaller than a gallon (and even that is difficult), and betta fish cannot thrive in unheated water—cold temperatures compromise their immune system, causing stress and illness.

Tank Level

Top

Care

Easy

Behavior

Aggressive with other males. Will sometimes chase and kill females as well.

Compatibility

Picky about their tankmates. They are easily irritated by other fish and do not mind living alone. Males should never be kept together, period. It is very rare to have a pair of males live together without eventually fighting and injuring themselves. Even if they don't fight (unlikely), they will still be far more stressed than if left alone. Males and females should never be kept together except briefly for breeding purposes. Bettas are solitary fish and do not need tankmates. While they can, of course, be kept with other suitable fish, bettas should never be kept with other bettas. If you have other fish in the tank, it is recommended to pick tropical fish about the same size, not aggressive fish, also with barbs and bottom dwellers. Males will fight, sometimes to the death, with other males. They are territorial during breeding and aggressive toward female bettas after spawning. Can be tolerant with females and other fish that should not be kept with boisterous tankmates. Will even attack their own reflections in the mirror.

Life Span

2 - 3 years

Size

3 inches (7 cm)

Aquarium

Planted with some floating plants. Change their water often; at least 25% once a week. Depending on the tank size, a 100% water change is necessary once a week for any tank a gallon or smaller. Be sure to monitor the temperature when doing water changes, as temperature fluctuations can harm the fish. An in-aquarium thermometer is necessary to monitor the temperature and make sure it does not change rapidly or drop below 75 degrees. Do not need an air pump; they can breathe the air from the top of the tank.

Water Chemistry

Freshwater

pH

6.8 - 7.4

Hardness

Mid-range

Temperature

75° - 86° F (24° - 30° C)

Feeding

Flakes, frozen foods, small betta pellets; likes live food. Some have said they can live on lily roots alone, but this is a myth. They need to be fed at least once a day.

Sexing

Males have longer fins.

Breeding

Egg layer, will build a bubble nest. Males entice the females under the nest. Eggs hatch in a short 24 hours. Males will guard the eggs. Do not keep too many males in the same tank. Male bettas may eat the young after they hatch.

Origin

Southeast Asia, Laos, Myanmar, Colombia, sluggish waters

Extras

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Close Up - A light teal blue with a red trim Siamese Fighting Fish

Male betta fish named Yoshonkah

Close Up - A light teal-blue with a red trim Siamese Fighting Fish. There is a water plant behind it

Male betta fish named Yoshonkah

Close Up - A red Siamese fighting fish is swimming next to a blue toy

Male betta fish named Buster

Close Up - A red Siamese Fighting Fish is swimming next to the tail of a blue toy

Male betta fish named Buster

Close Up - A red Siamese Fighting Fish is swimming over top of different brown shaded rocks

Male betta fish named Buster

Close Up - The face of a Red Siamese Fighting Fish is swimmign next to a blue shark toy with tan gravel below it.

Male betta fish named Buster

Close Up - The Side of a purple with blue and red Siamese Fighting Fish

Male betta fish named Kung Fu

Close Up - A purple with blue and red Siamese Fighting Fish

Male betta fish named Kung Fu

A purple with blue and red Siamese Fighting Fish is swimming towards an underwater plant

Male betta fish named Kung Fu

Close Up - A Purple with Blue and Red Siamese Fighting Fish is swimming over purple rocks

Male betta fish named Kung Fu

The left side of A purple with blue and red Siamese Fighting Fish swimming over purple gravel.

Male betta fish named Kung Fu

Close Up - A light teal blue with red and white Siamese Fighting Fish is wading in front of a water plant

Male betta fish named Rockamolly

Close Up - A light teal blue with red and white Siamese Fighting Fish is swimming towards the front glass pane

Male betta fish named Rockamolly

Close Up - A light teal-blue with red and white Siamese Fighting Fish is wading over a bunch of blue rocks

Male betta fish named Rockamolly

Close Up - A light teal-blue with red and white Siamese Fighting Fish is swimming in front of a water plant

Male betta fish named Rockamolly

Close Up - A red Siamese Fighting Fish is swimming around

Male betta fish named Shaminticka

Close Up - A red Siamese Fighting Fish is swimming around

Male betta fish named Shaminticka

Close Up - A red Siamese Fighting Fish is swimming next to an underwater plant

Male betta fish named Shaminticka

Close Up - A red Siamese Fighting Fish wading in water. There is an underwater plant behind it

Male betta fish named Shaminticka

Close Up - A red Siamese Fighting Fish looking like it is hanging in the water.

Male betta fish named Shaminticka

Close Up - A red Siamese Fighting Fish is swimming towards the top of the water aquarium

Male red betta fish

Close Up - A red Siamese Fighting Fish is swimming. The back of its fin is breaking the water

Male red betta fish

A Red Siamese Fighting rish is swimming in a small clear tank next to another tank with a light teal-blue Siamese fighting fish

Two betta fish tanks side-by-side. Both bettas are male, so they cannot be kept in the same aquarium.

Two Fish tanks are next to each other with a divider in between them. One tank has a light teal-blue Siamese Fighting fish in it and the other has a red Siamese fighting Fish in it

These two male bettas have their own tanks because they are both male. Notice the divider between the two tanks? When it is removed they try and fight through the tank walls.

A blue Siamese fighting fish is in a fish bowl swimming over top of a bunch of marbles

Male betta fish

A white and red Siamese fighting fish is swimming over blue and pink gravel. There is a frog decoration in the tank

Betta fish