Crowntail Betta
Betta splendens
The Crowntail Betta is famous for its spiky, separated fins. The membrane between the fin rays is genetically reduced to a minimum, leaving the bone "spikes" completely free. This gives it an aggressive look, similar to a toothed crown. It is slightly more agile than the Halfmoon because its fins create less drag, but the free rays are very delicate. If the water is not perfect, soft, and rich in protective tannins, the tips will irreversibly curl, ruining the fish for life.
Température de l’eau
24 - 29 °C
Valeur du pH
6 - 7.5
Type d'eau
Eau douce
Niveau dans le bac
Surface et milieu
Taille adulte
7 cm
Volume minimal du bac
>= 20 L
Groupe minimal
>= 1
GH
4 - 15 dGH
KH
2 - 7 dKH
TDS
80 - 295 ppm
Conductivité
125 - 461 uS/cm
Description de l'espèce
Geographical Origin and Habitat: Artificially selected variety in captivity, originated in Indonesia in the late 1990s. Does not exist in nature. Descended from the Betta splendens of the Southeast Asian swamps.
Taxonomy and Morphology: Crowntail Betta (Betta splendens CT mutation). Characterized by a drastic reduction of the membrane (webbing) between the fin rays. The protruding rays form distinct points, giving the fins (caudal, anal, dorsal) the appearance of a spiky crown.
Social Behavior: Strongly aggressive and territorial towards other males. Less agile than a Plakat due to the large fins, but extremely proud and snappy. Spends most of its time patrolling its territory.
Coloration and Sexual Dimorphism: Available in every imaginable color: from "Black Orchid" to red, blue, white or mustard gas. The male shows the typical crown and vast fins; the female has much shorter fins but also presents the typical jaggedness of the protruding rays.
Soins, reproduction et cohabitation
Aquarium Setup: Dedicated aquarium (min. 20-30 liters / 5-8 gallons for a single specimen). Absolutely avoid sharp rocks or pointy woods that would fray the delicate rays of the crown. Real plants (Anubias) and total absence of current, which would exhaust it, are ideal.
Diet and Feeding: Insectivorous carnivore. Feed floating pellets for Betta alternated with live/frozen food to prevent constipation (primary cause of swim bladder problems). Be careful not to overfeed.
Water Quality: Crystal clear and warm water (26-28°C / 79-82°F) is essential. The very long ray extensions of the Crowntail are a magnet for bacteria and fungi: without meticulous water quality, the tips will rot (fin rot) in no time.
Compatibility and Cohabitation: Isolated keeping recommended. Can tolerate snails (Nerites) or large shrimp (Amano), but often attacks them. Fast fish or Guppies (mistaken for rivals due to their voluminous tails) are absolutely forbidden.
Aquarium Breeding: Bubble nester. More demanding than other varieties because the large fins hinder the male during the "embrace". Always remove the female immediately after spawning, otherwise the male will kill her.
Risks and Diseases: Fin Rot or Curling. If the water is too hard or polluted, the rays of the crown deform or "burn", losing their spectacular symmetry.
Origine et répartition géographiques
Artificially selected variety in captivity, originated in Indonesia in the late 1990s. Does not exist in nature. Descended from the Betta splendens of the Southeast Asian swamps.
Origine
Sélection et cultivarsAmérique du NordAsie du Sud et du Sud-Est
Profil de poisson
- Tempérament
- Aggressive
- The Crowntail Betta is highly territorial and aggressive, particularly toward other male Bettas and fish with similar colors or long, flowing fins. They are known to flare their gills and fins as a warning display to establish dominance over perceived rivals. Despite this aggression toward their own kind, they can be quite curious and interactive with their owners, often recognizing the person who feeds them. In a community setting, their temperament can vary from mildly tolerant to highly combative, depending on the individual fish's personality.
- Régime alimentaire
- Carnivore
- As strict carnivores, Crowntail Bettas require a diet rich in high-quality animal proteins to maintain their health and vibrant coloration. The staple of their diet should be a high-quality pellet or flake food specifically formulated for Bettas to ensure proper nutrition. This diet should be supplemented with live or frozen foods such as bloodworms, brine shrimp, daphnia, and tubifex worms. Feeding them vegetable matter is not recommended, as their digestive systems are not designed to process plant fibers efficiently.
- Espérance de vie
- 3-5 years
- Taille adulte
- 7 cm
- Ratio des sexes
- Solitary
- Due to their extremely aggressive and territorial nature, male Crowntail Bettas must always be kept singly in their own aquarium. Female Bettas can sometimes be housed together in a group, often referred to as a sorority, but this requires a very large, heavily decorated tank and experienced monitoring. Keeping a male and a female together in the same tank is not recommended outside of temporary breeding setups, as the male will likely harass or injure the female. For general hobbyists, a solitary setup is the safest and most stress-free stocking option.
- Fréquence d'alimentation
- Twice daily
- It is recommended to feed a Crowntail Betta once or twice daily, offering only as much food as they can consume within two to three minutes. Overfeeding is a common problem that leads to bloating, constipation, swim bladder issues, and poor water quality due to uneaten food. To prevent digestive problems, it is beneficial to fast the fish for one day each week to allow their digestive tract to clear. Adjust the portion sizes carefully, ensuring that their belly does not look excessively swollen after feeding.
- Charge biologique
- Low
- The biological load of a Crowntail Betta is relatively low due to its solitary lifestyle and small physical size. However, because of their delicate, long, and webbed fins, they require pristine water conditions to prevent fin rot and other bacterial infections. A slow-flowing, gentle filter is highly recommended to process biological waste without creating strong currents that can exhaust the fish. Regular partial water changes are essential to prevent the accumulation of toxic compounds like ammonia and nitrate.
- Courant
- Stagnant
- Crowntail Bettas strongly prefer very weak or gentle water flow in their aquarium. Their large, elaborate fins act like sails, making it extremely difficult and exhausting for them to swim in moderate or strong currents. A strong water flow can cause chronic stress, leading to a weakened immune system, fin damage, and general lethargy. Using sponge filters, air-powered filters, or adjusting filter outlets with baffles is highly recommended to keep the current to a absolute minimum.
- Risque de saut
- Yes
- The Crowntail Betta presents a high risk of jumping out of the aquarium, especially when startled, during feeding times, or if water quality deteriorates. It is absolutely necessary to equip the aquarium with a tight-fitting lid or cover glass to prevent accidental escapes. Any small gaps around cords or filters should be blocked or minimized to ensure the fish cannot squeeze through. Providing floating vegetation can also help cover the surface and make the Betta feel more secure, reducing their urge to jump.
- Reproduction
- Oviparous
- Reproduction in Betta splendens is a complex and fascinating process that is considered moderately difficult for beginners. The male constructs a bubble nest at the surface, using mucus to coat the bubbles and keep them together. During spawning, the male wraps his body around the female in a courtship embrace, fertilizing the eggs as they are released. Once spawning is complete, the female must be removed immediately to prevent the male from attacking her, as he takes sole responsibility for guarding the nest and raising the fry.
- Compatibilité et compagnons
- Solitary
- Crowntail Bettas are best kept alone, but they can be compatible with certain peaceful, dull-colored tank mates in larger tanks. Ideal companions include bottom-dwelling species like Corydoras catfish, Kuhli loaches, or small snails, which do not compete for surface space. Avoid keeping them with active fin-nippers, such as Tiger Barbs or certain Tetras, which will easily damage the Betta's delicate fins. Additionally, species that resemble Bettas, such as fancy Guppies or Gouramis, should be avoided as they may trigger the Betta's territorial aggression.
- Niveau dans le bac
- Top/Middle
- Crowntail Bettas are primarily middle-to-top dwelling fish, though they will occasionally explore all levels of the aquarium. They possess a specialized organ called the labyrinth, which requires them to visit the water's surface regularly to gulp atmospheric air. Floating plants and tall, broad-leafed species provide excellent resting spots near the surface, allowing them to rest comfortably. While they will swim down to the substrate to search for food or investigate decorations, their activity is concentrated in the upper water column.
Modèles et paramètres scientifiques
FishBase
Fenêtre sur les données scientifiques officielles de l’espèce
FishBase v25.04Données synchronisées le : 15/06/2026
- Niveau trophique
- 3,3 ± 0,41 se
- Résilience
- Élevée (moins de 15 mois)
- Singularité phylogénétique (PD50)
- 0.5
- Relation bayésienne longueur-poids
- a = 0.01, b = 2.97
- VulnérabilitéVulnérabilité faible (10 / 100)
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