Species description

Care, breeding and tankmates

Fish profile

Temperament

Semi-aggressive

While generally well-behaved, The Largescale archerfish possesses a semi-aggressive streak that requires careful tank mate selection. They will fiercely defend their chosen territory, especially during feeding or breeding times, but usually ignore fish that stay out of their way. Providing a large enough aquarium with distinct visual boundaries helps mitigate most aggressive tendencies.

Diet

Omnivore

The Largescale archerfish is a specialized insectivore, naturally feeding on insects that fall onto the water surface or live among aquatic vegetation. Their diet in the aquarium should heavily feature live or frozen insects, such as fruit flies, bloodworms, and mosquito larvae. While they can be trained to accept floating pellets, natural insect prey remains crucial for their digestion and vitality.

Sex ratio

Pair

Males and females of The Largescale archerfish are nearly identical in appearance, making visual sexing extremely challenging outside of the breeding season. During spawning, females may appear slightly plumper, while males might develop slightly more intense coloration or specific breeding tubes. When keeping a group, a balanced mix is natural, though purchasing a larger group and letting pairs form organically is the best approach.

Feeding frequency

Twice daily

Since The Largescale archerfish feeds primarily at the surface, offering food in small, frequent amounts throughout the day mimics their natural foraging behavior. They should be fed two to three times daily, focusing on floating items that stay at the surface. Care must be taken to remove any uneaten food quickly to prevent water spoilage.

Bioload

The Largescale archerfish is known for producing a significant amount of waste, placing a high demand on the aquarium's filtration system. Heavy mechanical and biological filtration is absolutely critical to process the ammonia output safely and efficiently. Frequent and substantial water changes are an unavoidable part of keeping this species healthy in the long term.

Flow

Stagnant

Originating from moderately flowing streams and rivers, The Largescale archerfish appreciates a steady but not overpowering water current. The flow should be sufficient to ensure good oxygenation and even temperature distribution throughout the tank. Providing areas of both moderate flow and resting zones with lower flow will allow the fish to choose their preferred environment.

Reproduction

Oviparous

Reproduction in The Largescale archerfish involves the scattering of pelagic eggs directly into the water column, usually during the rainy season in their natural habitat. They do not exhibit any parental care, and the eggs are left to drift with the current until they hatch. Breeding them in captivity is incredibly difficult and rarely achieved without specialized hormonal treatments and massive breeding vats.

Compatibility & tankmates

This species can be somewhat territorial, especially towards conspecifics or similar-looking fish. They should be kept with robust fish that occupy different water levels to minimize aggressive encounters. Providing plenty of visual barriers like plants and driftwood will help reduce tension within the aquarium.

Tank level

Top

The Largescale archerfish spends the vast majority of its time patrolling the upper levels of the water column, often just below the surface. They rely on their upward-facing mouths to snatch food from the water's edge or even above it. Floating plants can provide them with a sense of security while they hunt and rest in this specific zone.