Types of Betta Fish With Pictures: Every Tail and Colour Type

Walk into any aquarium shop in Singapore and the sheer variety of bettas on display can overwhelm even seasoned hobbyists. This guide to types of betta fish with pictures breaks down every major tail shape and colour form so you can identify exactly what you are looking at — and what suits your setup. Compiled by Gensou Aquascaping at 5 Everton Park, Singapore, with over 20 years of hands-on experience, this resource covers the full spectrum of Betta splendens varieties bred today.

Tail Types: The Primary Classification

Betta enthusiasts classify varieties primarily by tail shape. Each type carries distinct finnage that affects swimming behaviour, flow tolerance, and care needs. Veiltail bettas — the most common type sold for $3–$8 at local shops — feature a long, asymmetrical caudal fin that droops gracefully downward. They are hardy and widely available, making them an ideal starting point for newcomers.

Beyond the veiltail, selective breeding has produced over a dozen recognised tail forms. Some, like the halfmoon, prioritise dramatic spread; others, like the plakat, favour a compact, athletic build closer to wild Betta splendens.

Halfmoon and Over-Halfmoon

Halfmoon bettas display a caudal fin that fans to a full 180-degree spread when flared. Achieving that perfect D-shape requires meticulous lineage — breeders in Thailand and Indonesia have refined this form over decades. Over-halfmoon specimens exceed 180 degrees, creating an almost circular silhouette.

Heavy finnage means these fish struggle in strong currents. Keep filter output gentle — a sponge filter or baffled hang-on-back works well in Singapore’s typical 20–40 litre betta setups. Fin biting can also occur if the weight becomes uncomfortable, so pristine water quality at 24–28 °C is essential.

Crowntail

Instantly recognisable by their spiky, ray-extended fins, crowntails have reduced webbing between fin rays, producing a dramatic fringed appearance. Single-ray, double-ray, and cross-ray sub-types exist, each with progressively elaborate extensions. Crowntails tend to be slightly hardier than long-finned varieties because there is less tissue prone to tearing.

Prices for quality crowntails in Singapore range from $8 to $25, depending on colour intensity and ray symmetry. Hobbyists on Carousell and Shopee frequently offer imported Thai-bred stock.

Plakat: The Short-Finned Fighter

Plakat bettas carry short, rounded fins much closer to their wild ancestors. Faster swimmers and more agile than long-finned cousins, plakats are less susceptible to fin rot and tearing. They tolerate slightly stronger flow, making them better candidates for community nano tanks with modest current.

In Southeast Asia, plakat lines remain enormously popular. Many rare colour mutations — koi, galaxy, candy — surface first in plakat form before breeders cross them into long-fin varieties. A top-grade koi plakat can fetch $40–$80 in Singapore.

Double Tail

Double tail bettas possess two distinct caudal lobes separated at the caudal peduncle, paired with a noticeably wider dorsal fin. The genetic trait that produces the split tail also shortens the body slightly, so double tails appear stockier. This body shape can predispose them to swim bladder issues if overfed — portion control matters more with this variety.

Rosetail and Feathertail

When halfmoon breeding is pushed further, excessive branching of fin rays creates ruffled, rose-petal edges. These rosetail bettas are visually stunning but carry a welfare trade-off: the heavy, layered fins restrict movement and are prone to collapse. Feathertails take this further still. Many experienced keepers, ourselves included at Gensou Aquascaping, recommend halfmoons over rosetails for long-term health.

Colour Forms at a Glance

Beyond tail shape, colour adds another dimension entirely. Solid colours — royal blue, steel blue, red, black, white — are the foundation. Bi-colour bettas combine two distinct hues, while butterfly patterns show banded fins with colour transitioning to white or clear at the edges. Marble bettas carry a transposon gene that causes colour to shift unpredictably over weeks, meaning the fish you buy today may look different in a month.

Koi bettas mimic the mottled red-white-black palette of Japanese koi carp and have surged in popularity across Singapore. Galaxy and avatar varieties feature iridescent scaling over dark bodies — commanding premium prices of $30–$60 from specialist breeders.

Choosing the Right Type for Your Setup

Matching betta type to tank conditions prevents frustration. Heavy-finned varieties like halfmoons and rosetails need calm water, warm stable temperatures of 26–28 °C, and tanks of at least 15 litres. Plakats handle a wider range of conditions and suit lightly planted aquascaped tanks with gentle flow. Short-finned females adapt even more readily to community setups.

Whichever type catches your eye, understanding these types of betta fish with pictures in mind helps you set realistic care expectations. Explore the full range, ask breeders about lineage, and always prioritise health over novelty.

Related Reading

• Betta Fish Colours and Patterns Guide: Solid, Marble and Butterfly
• Fancy Betta Varieties Guide: Crowntail, Halfmoon and More
• Female Betta Fish Care Guide: Colour, Temperament and Sorority Tips
• Betta Fish Water Temperature Guide: Ideal Range and Heater Tips
• Best Betta Fish Tank Kits: Heated, Filtered and Ready to Go