Common Hatchetfish (Gasteropelecus sternicla) Care Guide

The most commonly kept hatchetfish species with a bright silver body and deep keel-shaped belly. An exclusive surface dweller that feeds on insects at the water surface.

Overview

Gasteropelecus sternicla is a species in the family Gasteropelecidae. The most commonly kept hatchetfish species with a bright silver body and deep keel-shaped belly. An exclusive surface dweller that feeds on insects at the water surface. Requires a tight-fitting lid as it readily jumps when startled.

Taxonomy

Family: Gasteropelecidae
Genus: Gasteropelecus
Scientific name: Gasteropelecus sternicla
Other names: Silver Hatchetfish, River Hatchetfish
Origin: South America, Amazon Basin, Guyana

Habitat

Widely distributed across the Amazon and Orinoco basins and the Guianas. Inhabits surface waters of slow streams and floodplains. Like other hatchetfishes, it is a strong surface-skimmer that can leap clear of the water; a single black lateral stripe distinguishes it from the marbled species.

Tank requirements

Minimum tank volume: 60 L
Temperature: 23-27 °C
pH: 5.5-7.5
GH: 2-15 °dGH
Water flow: low
Adult size: 3-4 cm
Lifespan: 2-5 years
Recommended group size: ≥ 6
Difficulty: beginner

Diet

Classified as omnivore. Recommended feeding frequency: 2x daily. In captivity, offer a varied diet appropriate to the species — quality prepared foods supplemented with frozen or live items of suitable size.

Compatibility

Temperament: peaceful
Swimming level: top
Compatible tank mates: Neon Tetra, Corydoras, Harlequin Rasbora, Cherry Shrimp
Avoid with: Oscar, Aggressive Cichlids, Large Predators

Breeding

Breeding strategy: egg-scatterer
Breeding difficulty: advanced