Silver Hatchetfish

Gasteropelecus sternicla

A surface-dwelling shoaler with a deep keel-shaped chest, known to leap.

Water

Freshwater

Temperature

73–81°F

pH

6–7.5

Hardness

2–15 dGH

Max size

2.5 in

Min tank

20 gal

Temperament

Peaceful

Social

Schooling (6+)

Swim level

Top

Diet

Omnivore

Care level

Intermediate

Lifespan

3-5 years

Breeding

Egg-scatterer

Suitability

Common

Origin

South America (Amazon, Peru)

Spends its time just below the surface waiting for small insects, so a tight-fitting lid is essential — it can launch itself out of the water. Keep a group and offer floating foods. Peaceful but easily startled.