Elephant Ear Betta (Dumbo)
Betta splendens
The Dumbo Betta has enormous pectoral fins resembling elephant ears. Visually stunning, it is the most physically disabled fish of its species. Pectoral fins are used to steer: turning them into huge heavy drapes is like paralyzing the fish. It struggles desperately for every inch swum to the surface to breathe. It is condemned to continuous exhaustion, and MUST be kept in aquariums with zero current (sponge filters) to prevent it from dying of a stress-induced heart attack.
Wassertemperatur
24 - 29 °C
pH-Wert
6 - 7.5
Wassertyp
Süßwasser
Tankfüllstand
Oberfläche und Mitte
Erwachsenengröße
7 cm
Mindesttankvolumen
>= 20 L
Mindestgruppe
>= 1
GH
4 - 15 dGH
KH
2 - 7 dKH
TDS
80 - 295 ppm
Leitfähigkeit
125 - 461 uS/cm
Artbeschreibung
Geographical Origin and Habitat: Ornamental show variety ("show betta") created in captivity. Derives from the classic domestic forms of Thai B. splendens, selected for a specific mutated trait affecting the pectoral fins.
Taxonomy and Morphology: Elephant Ear / Dumbo Betta. This variety is defined by a genetic hypertrophy of the pectoral fins (the lateral ones behind the gills), which grow out of proportion to take the shape of huge elephant ears (or wings), used hypnotically while swimming.
Social Behavior: Extremely clumsy. Although they maintain the territorial and aggressive instinct, they are physically hampered by the weight of the enormous pectorals that create friction with the water, making them slow and easy prey.
Coloration and Sexual Dimorphism: The Dumbo trait can be combined with any color and tail shape (Halfmoon Dumbo, Plakat Dumbo). The huge pectoral fins are often an opaque and contrasting color (e.g. blue body, pure white "ears"). Females also possess enlarged pectorals.
Pflege, Zucht und Mitbewohner
Aquarium Setup: Dedicated nano-aquarium (20 liters / 5 gallons). Absolutely ESSENTIAL that there is no water current. A pump that is too strong would exhaust a Dumbo in a few hours. Provide Anubias leaves placed near the surface so it can "park" and rest at the water level.
Diet and Feeding: Carnivorous omnivore. Because they move slowly, food must be administered in a targeted and calm manner. Floating pellets, bloodworms and krill are ideal. Avoid food that sinks quickly, they will not be able to chase it.
Water Quality: Warm (27°C / 81°F) and pristine water. The immense pectoral fins are prone to mycosis and rot, especially because they tend to rub them on the bottom when they rest due to fatigue.
Compatibility and Cohabitation: To be kept in complete isolation. They are the designated victims of any nipping or fast fish. Putting them with Guppies or Tetras, their "ears" will quickly be nibbled down to the base.
Aquarium Breeding: Bubble nester. Breeding requires extra care. Dumbo males, made clumsy by their fins, often struggle to "close the embrace" around the female and recover the eggs falling to the bottom in time.
Risks and Diseases: Muscle exhaustion and Fin Rot. Dumbos are the result of an aesthetic forcing that penalizes them physically. If poorly managed, they spend their lives resting on the bottom due to the inability to bear the weight of the fins in continuous swimming.
Geografische Herkunft und Verbreitung
Ornamental show variety ("show betta") created in captivity. Derives from the classic domestic forms of Thai B. splendens, selected for a specific mutated trait affecting the pectoral fins.
Ursprung
Selektive Züchtung und SortenNordamerika
Fischprofil
- Temperament
- Territorial
- The Elephant Ear Betta is famously territorial and aggressive, particularly towards other males of its own species or fish with similar shapes and bright colors. They are solitary by nature and display flaring behavior when threatened or asserting dominance, exposing their gills and fins. Despite their aggression towards conspecifics, they can be relatively peaceful towards small, quick, and non-aggressive tankmates that do not resemble them. However, their heavy, oversized pectoral fins make them slower swimmers, making them targets for fin-nipping species.
- Diät
- Carnivore
- In their natural habitat, Bettas are insectivorous carnivores, feeding on insects, larvae, and small invertebrates. In the aquarium, they should be fed a protein-rich diet consisting of high-quality betta pellets, supplemented with live or frozen foods such as bloodworms, brine shrimp, and daphnia. It is important to avoid cheap fillers and plant-based foods, as their digestive system is adapted for processing animal proteins. A varied diet is essential for maintaining their vibrant colors, promoting fin health, and supporting their immune system.
- Lebenserwartung
- 3-5 years
- Erwachsenengröße
- 7 cm
- Geschlechterverhältnis
- Solitary
- Male Elephant Ear Bettas must be housed individually, as they are extremely territorial and will fight other males to the death. While females can sometimes be kept in groups (known as sororities) in larger, heavily planted aquariums, this requires experience and careful monitoring to manage aggression. For general keeping, a solitary setup is strongly recommended for males to avoid stress and physical injury. During planned breeding, a single male and a single female are introduced temporarily under close supervision.
- Fütterungsfrequenz
- Twice daily
- It is recommended to feed the Elephant Ear Betta once or twice daily, offering only what they can consume within one to two minutes. Because they are prone to bloating, constipation, and swim bladder issues, portion control is critical to their long-term health. Fasting the fish for one day each week can help clear their digestive tract and prevent health complications. Any uneaten food should be removed promptly from the aquarium to prevent water quality degradation.
- Bioload
- Low
- The biological load of a single Elephant Ear Betta is relatively low due to its small size and solitary nature, meaning it does not produce vast amounts of waste. However, they require highly stable water conditions and efficient filtration to prevent the accumulation of toxic ammonia and nitrites, which can easily damage their oversized fins. A gentle sponge filter is ideal, as it provides biological filtration without generating strong currents that could exhaust the fish. Regular partial water changes are essential to maintain low nitrate levels and ensure a healthy environment.
- Fluss
- Stagnant
- This variety has an extreme preference for weak, gentle water flow because their oversized pectoral fins act like sails, making swimming in currents exhausting. Strong water currents will quickly fatigue the fish, leading to severe stress, weakened immunity, and physical damage to their delicate fins. Air-powered sponge filters or filters with adjustable flow rates dialed to the lowest setting are highly recommended. Creating calm zones in the aquarium using dense live plants or decor will allow the fish to rest comfortably.
- Sprungrisiko
- Yes
- Elephant Ear Bettas are notorious jumpers and can easily leap out of the aquarium if it is left uncovered. A secure, tight-fitting lid is absolutely mandatory to prevent tragic escapes, especially since they spend a significant amount of time near the water's surface. Additionally, it is recommended to leave a gap of at least one to two inches between the water surface and the lid. This gap not only deters jumping but also ensures there is a layer of humid air for the fish to breathe through its labyrinth organ.
- Reproduktion
- Oviparous
- Breeding the Elephant Ear Betta is a complex and intense process that requires a dedicated breeding tank and close supervision. The male builds a bubble nest at the water surface, and after a courtship ritual, he wraps around the female in a spawning embrace to fertilize the eggs. Once spawning is complete, the female must be removed immediately, as the male will guard the nest aggressively and may attack her. The male cares for the eggs until they hatch, after which he should also be removed to prevent him from eating the free-swimming fry.
- Kompatibilität & Tankkameraden
- Solitary
- Male Elephant Ear Bettas should never be kept with other males or with active, colorful fish that could be perceived as rivals. They are compatible with peaceful, fast-moving, and short-finned community species like neon tetras, rasboras, and corydoras catfishes, provided the aquarium is sufficiently large. Avoid keeping them with notorious fin-nipping species, such as tiger barbs, as the Betta's long, heavy pectoral fins are easy targets. Invertebrates like snails or larger shrimp can make good tankmates, though smaller shrimp might be hunted.
- Tankfüllstand
- Top/Middle
- This species primarily occupies the middle and top levels of the water column, where they can easily access the surface to breathe atmospheric air using their specialized labyrinth organ. They frequently rest on broad leaves of aquatic plants or floating decorations close to the surface, which helps them conserve energy. Providing tall plants or floating platforms is highly beneficial to accommodate this preference. While they may occasionally visit the bottom to search for food, their daily activity is concentrated near the upper layers.
Wissenschaftliche Modelle & Parameter
FishBase
Zugang zu den offiziellen wissenschaftlichen Daten der Art
FishBase v25.04Daten synchronisiert am: 15.06.2026
- Trophäenniveau
- 3,3 ± 0,41 se
- Belastbarkeit
- Hoch (weniger als 15 Monate)
- Phylogenetische Einzigartigkeit (PD50)
- 0.5
- Bayessche Längen-Gewichts-Beziehung
- a = 0.01, b = 2.97
- AnfälligkeitGeringe Anfälligkeit (10 / 100)
Verwandte Arten
Empfehlungen gruppiert nach nahen Verwandten, Auswahl von Begleitern und ähnlicher Betreuung.
