Osphronemidaefreshwater fishbeginner

Siamese Fighting Fish

Betta splendens

Also known as: Siamese Fighting Fish, Betta, Traditional Betta, Red Veil Tail

Origin: Southeast Asia

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Water Parameters

Temperature2430 °C
15 °C35 °C
pH67.5
49
GH (Hardness)215 °dGH
0 °dGH30 °dGH
KH (Alkalinity)010 °dKH
0 °dKH20 °dKH

Quick Stats

Max Size
7 cm
Min Tank
20 L
Lifespan
2-4
Swimming Level
top
Schooling
No
Diet
carnivore
Temperament
males aggressive to own species; one of the most peaceful bettas toward other fish

About

The traditional red veil tail Siamese fighting fish is the form most people recognise as the quintessential betta. With brilliant red body and long, flowing fins, it has been selectively bred in Thailand for centuries and remains the most iconic freshwater aquarium fish in the world. It is an excellent choice for beginners.

Care Guide

Water: 26-30°C, pH 6.0-7.5, soft to medium hardness — even basic tap water (dechlorinated) is usually acceptable. Tank: minimum 20L with a heater, gentle filter, and lid; planted tanks dramatically improve wellbeing. Feeding: carnivore — betta pellets, frozen bloodworm, daphnia; feed once or twice daily in small amounts. Behaviour: males are aggressive to each other and fish with similar appearances — one per tank. Compatibility: widely compatible with peaceful community fish; the classic community aquarium centrepiece.

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