The scientific name Betta antoni belongs to the family Osphronemidae, and this fish is often called Betta antoni or Anthony's Betta. It was named after Irwan Antoni, a well-known exporter of tropical fish from Asia. A distinctive feature of these fish is their interesting and undoubtedly curious behavior to observe. They get along well with peaceful tankmates and do not pose any particular difficulties in terms of keeping or breeding. Perhaps their only drawback is their rather modest coloration.
- Required aquarium volume
- 50 L
- Size in aquarium
- 5 cm
- Temperature
- 22 – 27 °C
- Temperament
- Semi-peaceful (including aggression during spawning / intraspecific conflicts)
Description
Adult specimens of this fish reach a length of approximately 5 cm. Their main coloration is gray, with faint dark horizontal stripes extending from the head to the tail. A distinctive feature is a pattern of black stripes and spots located around the mouth. In males, unlike females, the scales and fin edges often shimmer with iridescent hues.
Habitat
The natural habitat of these fish is in Southeast Asia, specifically on the Indonesian side of Borneo Island, in the West Kalimantan province. They inhabit the lower reaches of the Kapuas River basin. Typically, the biotopes where these fish are found are calm sections of rivers or backwaters with clean, clear water, which sometimes acquires a slight brownish tint. This tint is due to the presence of humic and other tannins formed by the decomposition of plant organic matter. These bodies of water are dimly lit, as the dense tree canopies almost completely close over the surface, yet this does not prevent plants from forming lush thickets along the banks.
Behavior and Compatibility
Within this fish population, relationships between males are characterized by rivalry for dominant positions. In small aquariums, skirmishes between them are not uncommon, although they generally do not lead to serious injuries. Additionally, during the breeding season, females may show aggression towards other fish species, striving to protect their future offspring. Overall, these fish are quite peaceful and get along well with tankmates.
Care and Maintenance
For keeping one or two fish, the optimal aquarium volume starts from 50 L. If group keeping of 3-4 or more individuals is planned, it is important to provide many shelters in the decor, considering some peculiarities of their behavior, which will be discussed below. Driftwood, dense plant thickets, and various decorative elements can serve as shelters. Otherwise, the choice of aquarium decor remains a matter of personal taste. Experienced aquarists often add dried oak, birch, beech, maple, hazelnut, or the more exotic Indian almond leaves to the bottom; these are pre-soaked so they do not float. Gradually decomposing, the leaves release tannins that give the water a chemical composition and tint similar to the natural habitat of Betta antoni. For successful long-term keeping, water quality plays a key role. It is necessary to constantly maintain hydrochemical parameters (pH and dGH) within acceptable limits. It is important to avoid the accumulation of organic substances, which can lead to an increase in the concentration of nitrogen cycle products (ammonia, nitrites, nitrates) and a disruption of biological balance. The stability of the aquatic environment directly depends on the regular performance of all necessary aquarium maintenance procedures, such as water changes and waste removal, as well as on the uninterrupted operation of equipment, primarily the filtration system.
Diet
These fish are carnivorous, and in their natural environment, they hunt small insects and other invertebrates. When given the opportunity, they can also feast on very small fish, such as fry. After adapting to aquarium conditions, they easily switch to alternative types of food. The daily diet can consist of a variety of dry, frozen, and live foods. Specialized foods developed for Betta fish and offered by many manufacturers will be an excellent choice.
Breeding and Reproduction
Anthony's Bettas exhibit caring parental behavior, having developed a unique strategy to protect their future fry. Instead of laying eggs on the substrate or among vegetation, they brood them in their mouths. In this process, the important duty of brooding the eggs falls to the males. Females, in turn, actively guard the territory, patrolling it and chasing away any potential predators. Female individuals also show great initiative during courtship. The spawning process is accompanied by a peculiar "embracing dance," during which the fish gracefully intertwine with each other. The incubation period lasts from 12 to 17 days, after which fully formed fry emerge, ready to accept food. It is recommended to feed them specialized powdered foods, suspensions, or live food, such as Artemia nauplii.
Diseases
Most health problems in fish often arise from unsuitable keeping conditions. Maintaining a stable and comfortable habitat is a key factor for successful keeping. If symptoms of illness appear, the first step is to check the water quality. If deviations are found, it is important to take immediate measures to eliminate them. If the symptoms do not disappear or worsen, medicinal treatment may be required. More detailed information on symptoms and treatment methods can be found in the "Diseases of Aquarium Fish" section.
How to choose
When choosing Betta antoni, it is important to consider that the species is rarely found for sale and often requires ordering through specialized suppliers. Inspect the fish for signs of stress: healthy individuals should show curiosity, have clean fins without signs of erosion, and tightly adhering scales. Avoid specimens with sunken bellies, signs of lethargy, or unnaturally clamped fins, as this species is sensitive to transport conditions and water quality. Ask the seller about the keeping conditions, as the fish require soft and acidic water, close to natural parameters, for adaptation.
Frequently asked questions
The essentials: size, tank volume, water parameters and care
How big does Anthony's Bettas get?
An adult reaches 5 cm in length. Plan the tank around the maximum size: the fish quickly outgrows a cramped setup.
What size aquarium does Anthony's Bettas need?
The minimum recommended volume is 50 L. A smaller tank speeds up nitrate build-up and raises stress levels.
What water parameters does Anthony's Bettas need?
Temperature 22–27 °C, pH 5.5–7, hardness 1–5 dGH. Stability matters more than exact values: sudden swings are harder on the fish than a small deviation from the ideal.
How long does Anthony's Bettas live?
Around 3 years when kept properly. Lifespan depends directly on tank volume, water quality and a varied diet.
Is Anthony's Bettas aggressive?
Temperament: semi-peaceful (including aggression during spawning / intraspecific conflicts). Keep this in mind when choosing tank mates.
How many Anthony's Bettas should be kept together?
Recommended setup: mixed (solitary / pair / group). Ignoring this is a common cause of stress and disease.
What does Anthony's Bettas eat?
Diet type: any (universal). Feed small portions that are finished within a couple of minutes — overfeeding does more harm than underfeeding.
What is the scientific name of Anthony's Bettas?
The scientific name of the species is Betta antoni, family Osphronemidae.
