GasteropelecidaeFreshwater Fishintermediate

Hatchetfish Silver 6-pack

Gasteropelecus sternicla

Origin: Amazon and Orinoco basins, South America

H

Water Parameters

Temperature2327 °C
15 °C35 °C
pH5.57
49
GH (Hardness)08 °dGH
0 °dGH30 °dGH
KH (Alkalinity)04 °dKH
0 °dKH20 °dKH

Quick Stats

Max Size
6.5 cm
Min Tank
80 L
Lifespan
3–5
Swimming Level
upper
Schooling
Yes (6+)
Diet
carnivore
Temperament
Peaceful; completely harmless

About

Gasteropelecus sternicla, the Silver Hatchetfish, is an unusual and beautiful surface-dwelling characin from the Amazon basin. Its distinctive hatchet-shaped body — created by a massively enlarged, keel-like sternum housing powerful flight muscles — allows it to leap from the water and briefly glide to escape predators. In tanks it skims just below the surface, darting to catch surface-fallen food. A peaceful community fish that must be kept in schools of 6+ and requires floating plant cover. Extremely jump-prone; a tight lid is mandatory.

Care Guide

Tight-fitting lid essential — will jump through tiny gaps. Floating plant cover (frogbit, Salvinia). Temperature 23–27 °C, soft slightly acidic water. Feed floating micro-pellets, fruit flies, live insect larvae. Groups of 6+. Sensitive to water quality changes.

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