Other scientific names: Barbus aureus, Barbus hainani, Barbus semifasciolatus, Capoeta semifasciolata, Puntius semifaciolatus, Puntius semifasciolata
The Green Barb is a result of artificial selection, an improved form of the well-known Sumatra Barb (Puntigrus tetrazona). This energetic schooling fish has gained popularity among aquarists due to its vibrant coloration and ease of care.
- Required aquarium volume
- 50 L
- Size in aquarium
- 7 cm
- Temperature
- 20 – 26 °C
- Temperament
- Peaceful, active/mobile
Description
This fish inherited a streamlined physique from its ancestors: a rounded silhouette, a prominent dorsal fin, and a pointed head—all indicative of its active lifestyle. Its coloration is characterized by a rich green hue with a metallic blue sheen. It is worth noting that this vibrancy is characteristic of young individuals and may fade slightly over time. Unlike its progenitor, the Sumatra Barb, the Green Barb lacks clearly defined vertical dark stripes. The fins are adorned with a red outline, which becomes particularly noticeable and bright during spawning. During this time, the males' heads acquire a rich red color.
Habitat
The habitat of the Green Barb spans freshwater bodies in Southeast Asia, including the southern and southeastern regions of China, Vietnam, and Malaysia. These fish inhabit various types of watercourses: small rivers with slow currents, streams, dammed areas, swampy regions, and artificial irrigation canals. In their natural environment, they prefer to stay in the middle and bottom layers of water at depths of up to 5 meters, choosing areas with sandy or silty-sandy bottoms and abundant aquatic vegetation.
Behavior and Compatibility
This is an active and friendly fish that coexists well with other active species of similar size. They must be kept in schools—from 6–7 individuals or more. If the group is too small or the fish are kept alone, Barbs often start to show aggression towards tank mates; the smaller the school, the more pronounced the aggression. Additionally, they have a tendency to nip and damage the fins of slower inhabitants.
Care and Maintenance
The Green Barb thrives in high-quality water. To maintain this, it is recommended to use a powerful filter and regularly, once a week, renew a quarter of the aquarium water volume. The currents created by the filtration system mimic natural flow, which positively affects the fish's tone. Barbs prefer the middle layers of water. For this reason, when decorating the aquarium, decor elements should be placed to leave sufficient free swimming space. Dense plant thickets along the walls will serve as excellent hiding places. Using a sandy substrate in combination with elements of natural bogwood (including roots, branches, and pieces of wood) will be very appropriate for decoration.
Diet
This fish eagerly accepts a variety of foods: live, frozen, and dry, of appropriate size. Small invertebrates, such as Daphnia, bloodworms, or Artemia, can be considered an excellent choice. Pay attention to Aqvium flake food for aquarium fish, which has become a bestseller on Ozon with a rating of 4.9. It is suitable for most aquarium inhabitants, and its raw materials are produced in accordance with European Union standards (EU 2018/848). The food contains important vitamins A, C, D3, E, and Omega 3-6. It can be purchased on Ozon.
Breeding and Reproduction
These fish reach sexual maturity when their body length is approximately 2–3 cm. During the spawning period, the male and female form a temporary pair, which is easy to distinguish in the school: the female has a larger body and a full abdomen, while the male is somewhat smaller, has more intense coloration, and a bright red head. A separate tank of at least 40 L is required for spawning, equipped with an air-lift filter and a heater. Several plants and a substrate of large pebbles are placed in it. Optimal water parameters for spawning include softness (up to 10 GH), slightly acidic reaction (around 6.5 pH), and a temperature range of 24–26 °C. First, the female is transferred to the spawning tank, and the male is introduced to her only two days later. During the courtship dance, the female releases 1–3 eggs at a time, which are immediately fertilized and sink to the bottom. A total of at least 300 eggs will be laid. After spawning is complete, the adult fish should be immediately returned to the main aquarium to prevent them from eating their own eggs. Fry hatch after 2 days, and after another 5 days, they are able to swim freely.
Diseases
Under favorable conditions, health problems are extremely rare. Most often, they arise due to deteriorating water quality or the introduction of sick individuals into the main aquarium. Detailed information on symptoms and treatment methods can be found in the “Aquarium Fish Diseases” section.
How to choose
When selecting individuals in a store, attention should be paid to the activity and appearance of the fish. Healthy barbs should be active, without visible damage to scales, fins, or signs of plaque on the body. It is important to avoid purchasing fish that appear sluggish, stay near the water surface, or have an unnaturally bloated abdomen. Since the species is schooling, it is recommended to acquire a group of 6–7 individuals at once, as solitary keeping leads to stress, loss of vibrant coloration, and aggression.
Frequently asked questions
The essentials: size, tank volume, water parameters and care
How big does Green Barb get?
An adult reaches 7 cm in length. Plan the tank around the maximum size: the fish quickly outgrows a cramped setup.
What size aquarium does Green Barb need?
The minimum recommended volume is 50 L. A smaller tank speeds up nitrate build-up and raises stress levels.
What water parameters does Green Barb need?
Temperature 20–26 °C, pH 6–8, hardness 4–20 dGH. Stability matters more than exact values: sudden swings are harder on the fish than a small deviation from the ideal.
How long does Green Barb live?
Around 7 years when kept properly. Lifespan depends directly on tank volume, water quality and a varied diet.
Is Green Barb aggressive?
Temperament: peaceful, active/mobile. Keep this in mind when choosing tank mates.
How many Green Barb should be kept together?
Recommended setup: schooling (usually from 5–6 individuals and more). Ignoring this is a common cause of stress and disease.
What does Green Barb 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 Green Barb?
The scientific name of the species is Barbodes semifasciolatus, family Cyprinids (Cyprinidae). It also appears in the literature as: Barbus aureus, Barbus hainani, Barbus semifasciolatus.
