Desmopuntius foerschi, known as the Reticulated Barb, is a member of the Cyprinidae family. This active and peaceful fish will be an excellent addition to a mixed community of freshwater inhabitants. Its ease of care and unpretentiousness make it suitable even for beginner aquarists.
Adults reach a length of up to 5 cm. Their coloration is silvery, with characteristic rows of uneven vertical stripes alternating with speckles. The fins and tail remain translucent. Sexual dimorphism is weakly expressed; males and females are almost identical in appearance. However, during the spawning period, females typically become slightly larger.
The natural habitats of this species are found on the island of Kalimantan, one of the largest in Southeast Asia. Here, the Reticulated Barb inhabits swamps, as well as associated rivers and streams that flow in the shade of tropical forests. The water in these bodies of water is typically stagnant, enriched with tannins released from decaying plant organic matter, which gives it a characteristic brown tint. The bottom substrate can vary depending on the specific location, most often consisting of peat, sand, or mud.
As peaceful schooling fish, they coexist wonderfully with many other species of similar size. However, it is advisable to avoid keeping them with overly active or, especially, aggressive tankmates. It is recommended to form a group of at least 8–10 individuals, ensuring a mixed-sex school.
For comfortable keeping of a small school of these fish, an aquarium of at least 80 liters is recommended. The decor should preferably include driftwood, dark substrate, and abundant vegetation, including shade-loving species and floating plants. Lighting should be subdued. Adding dried leaves will not only give the aquarium a more natural look but also enrich the water with tannins, creating conditions similar to the Reticulated Barb's natural habitat. Regular aquarium maintenance includes standard procedures: weekly water changes of approximately 20% of the volume with fresh water, removal of organic debris (such as uneaten food and excrement), prophylactic inspection of equipment, and constant monitoring of pH, dGH, and oxidizability values. Since Reticulated Barbs inhabit bodies of water with weak currents, when choosing a filtration system, preference should be given to models that do not create a strong circulation flow.
These fish are omnivorous and undemanding eaters, readily consuming most common foods. The quality and composition of the diet directly affect the vibrancy of their coloration and the overall health of the individuals, so choosing products from reputable manufacturers is preferable.
Reliable information about successful breeding of this species in aquarium conditions is absent. No information has been recorded on the spawning behaviour, spawning triggers or rearing of fry of this species.
In a balanced aquarium ecosystem, closely matching the requirements of this species, diseases are extremely rare. Illnesses often arise due to deteriorating habitat quality, contact with already sick fish, or physical injuries.
When purchasing, choose active individuals with clean fins and no visible damage to their scales. It is important to assess the overall condition of the fish in the aquarium: healthy specimens should show interest in food and not exhibit signs of emaciation or unnatural behavior. Due to the rarity of the species, wild-caught individuals are often found for sale, so it is recommended to clarify with the seller the fish's adaptation period to aquarium conditions and the composition of the proposed diet. Avoid purchasing fish that appear sluggish, hide in corners, or show signs of infectious diseases, as this species is sensitive to abrupt changes in water parameters.
The essentials: size, tank volume, water parameters and care
An adult reaches 5–5.3 cm in length. Plan the tank around the maximum size: the fish quickly outgrows a cramped setup.
The recommended volume is 80 L. A smaller tank speeds up nitrate build-up and raises stress levels.
Temperature 20–28 °C, pH 5–7, hardness 1–10 dGH. Stability matters more than exact values: sudden swings are harder on the fish than a small deviation from the ideal.
Around 6 years when kept properly. Lifespan depends directly on tank volume, water quality and a varied diet.
Temperament: peaceful (regular). Keep this in mind when choosing tank mates.
Recommended setup: large group (10+ individuals). Ignoring this is a common cause of stress and disease.
Diet type: small / appropriate size / pieces. Feed small portions that are finished within a couple of minutes — overfeeding does more harm than underfeeding.
The scientific name of the species is Desmopuntius foerschi, family Cyprinids (Cyprinidae). It also appears in the literature as: Barbus foerschi, Puntius foerschi, Systomus foerschi.
The water suits 198 of 208 plants in the catalogue — the easiest ones are shown first.
Afzelius's AnubiasAnacharisAnubiasBrazilian PennywortDwarf CloverDwarf CloverDwarf HygrophilaDwarf SagittariaDwarf ValGuppy GrassHornwortJava FernJava MossMoneywortMud SwordNair's LagenandraNarrow Leaf AnacharisNarrow-leaf CloverStringy MossSüsswassertangTaiwan MossTape GrassTemple PlantUssuri Watermilfoil
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