Melon Barb

Cyprinidae sp.

Melon Barb (Cyprinidae sp.) — Intermediate care, Semi-aggressive, under Barb & Shark. Minimum tank in the app: 40 US gal min; aim for 72–79°F and pH 6–7.8. The Melon Barb is an engaging choice for aquarists who appreciate dynamic schooling behaviour and a bit of personality in their fish.

Melon Barb (Cyprinidae sp.) in a planted freshwater aquarium
Care levelIntermediate
TemperamentSemi-aggressive
Min tank size40 US gal min
pH range6–7.8
Temperature72–79°F
Max size2.8 in (7.0 cm)
Captive lifespan5–10 years
SchoolingYes · 6+ recommended

Captive lifespan reflects typical experience in a home aquarium, not maximum recorded age; genetics, sourcing, and care vary.

Natural distribution

Asia

  • East & Southeast Asia

Regional colours match the stocking calculator’s origin map.

Melon Barb Tank Setup

Design your aquarium with ample swimming space complemented by strategic cover to allow for exploration and retreat. A mix of open areas for swimming and dense planting can help create a balanced environment. Use a sandy or fine gravel substrate to minimize stress on their bodies and moderate lighting to prevent startled reactions.

What Do Melon Barbs Eat?

Melon Barbs are enthusiastic feeders and thrive on a varied diet, which can lead to competitive behaviour at mealtimes. Ensure that food reaches all fish by using sinking pellets or spreading flakes across the surface.

Melon Barb Tank Mates

Ideal companions include other robust mid-water swimmers of similar size and temperament, like larger tetras or rasboras. Caution is advised with slower or long-finned species, which may become targets for fin-nipping. Within their own species, keeping them in groups of six or more helps establish a stable social dynamic, reducing individual aggression.

Are Melon Barbs Good for Beginners?

We rate this as intermediate. Budget time for testing, maintenance, and watching behaviour if the water looks fine but the fish do not. Aquarists often underestimate the importance of group size and tank complexity for Melon Barbs, leading to stress and aggression. Failing to provide enough cover or companions can trigger territorial disputes or fin-nipping behaviours.

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