Esomus danrica is an active schooling fish with distinctive long barbels and a remarkable jumping ability. Ideal for spacious, well-covered aquariums.
Overview
Esomus danrica, commonly known as the Indian Flying Barb, is a slender and energetic fish belonging to the carp family (Cyprinidae). In the wild, this species inhabits rivers, streams, ponds, and even flooded rice paddies across South and Southeast Asia — from India and Sri Lanka to Thailand and Myanmar. The most striking feature of Esomus danrica is a pair of extraordinarily long thread-like barbels that can reach the length of the fish's body and serve as tactile organs for finding food.
The body is elongated and torpedo-shaped, silvery-olive with a thin dark lateral stripe running along the flanks. Adults reach a size of 12–15 cm, making this one of the larger representatives of the genus. Lifespan in the aquarium is 2–3 years with proper care.
The name "Flying Barb" comes from the fish's ability to make powerful leaps out of the water — in nature, this helps them escape predators and navigate obstacles. This trait must be carefully considered when keeping them in an aquarium.
Tank Requirements
A group of Esomus danrica requires an aquarium of at least 100 liters. These active fish need substantial swimming space, so a long, rectangular tank shape is preferred. A tightly fitting lid is absolutely essential, as these fish are excellent jumpers and can easily end up outside the aquarium.
Optimal water parameters:
- Temperature: 22–28°C
- pH: 6.0–7.5
- Hardness (GH): 5–15
The aquarium should be arranged with dense vegetation along the sides and back wall, leaving the central area open for swimming. Vallisneria, cabomba, and hornwort work well. Fine substrate such as sand or small gravel is preferred. Moderate current created by a filter or powerhead replicates natural conditions and keeps the fish active. Medium lighting is suitable, and floating plants can be added to create shaded areas.
Feeding and Diet
Esomus danrica is an omnivorous species with an active metabolism that feeds on small insects, larvae, plankton, and algae in nature. In the aquarium, these fish readily accept a variety of foods:
- Staple diet: high-quality flakes or small pellets for tropical fish
- Live and frozen foods: bloodworms, daphnia, brine shrimp, cyclops
- Vegetable supplement: spirulina, blanched lettuce leaves
Feed 2–3 times daily in small portions that the fish can consume within 2–3 minutes. Flying Barbs primarily take food from the surface and mid-water column, so sinking foods may go uneaten. A varied diet is the key to good health and active behavior.
Care and Maintenance
Keeping Esomus danrica is not particularly demanding and is suitable for aquarists with basic experience. Key recommendations:
- Water changes: 20–30% of the tank volume weekly
- Filtration: an effective filter with moderate output providing mechanical and biological filtration
- Aeration: good oxygen saturation is essential for this active species
- Parameter monitoring: regularly check temperature, pH, and ammonia/nitrite levels
Flying Barbs should be kept in groups of at least 6 individuals — in a school, the fish feel more confident and display natural behavior. Solitary specimens become skittish and stressed. Make sure there are no gaps in the aquarium lid through which fish can jump — even small openings around cables and tubing can be enough.
Compatibility
Esomus danrica is a peaceful species with moderate activity levels, well suited for community aquariums. Due to their active nature, these fish occupy the upper and middle water layers without conflicting with bottom dwellers.
Suitable tank mates:
- Zebra Danio and other danios — similar temperament and keeping conditions
- Scissortail Rasbora — an active and peaceful companion
- Julii Corydoras and other corydoras — bottom dwellers that do not compete for space
- Flame Tetra and other peaceful characins
Unsuitable tank mates:
- Large and aggressive cichlids
- Slow-moving, long-finned fish — Flying Barbs may disturb them with their activity
- Small shrimp — may be treated as food
During feeding, keep in mind that Flying Barbs are fast swimmers and may outcompete slower tank mates. In such cases, add food at multiple points in the aquarium simultaneously.
Breeding
Breeding Esomus danrica at home is possible but requires some preparation. This is an egg-scattering species that broadcasts eggs among plants and shows no parental care.
To stimulate spawning, raise the water temperature to 26–28°C and feed the fish generously with live food for 1–2 weeks. In a breeding tank of 30–50 liters, place fine-leaved plants (Java moss, cabomba) or a synthetic spawning mop. A mesh on the bottom is advisable to protect the eggs from being eaten by the parents.
The female scatters several hundred small eggs, after which the adults should be removed immediately. The eggs develop within 24–48 hours, and 2–3 days after hatching, the fry become free-swimming and begin to feed. Initial food should be infusoria, "green water," or specialized liquid fry food. As the fry grow, transition them to baby brine shrimp and finely crushed flakes.