Marbled Hatchetfish

Marbled Hatchetfish — The Surface-Dwelling Showpiece of the Planted Aquarium

The Marbled Hatchetfish (Carnegiella strigata) is one of the most distinctive and captivating fish available for the freshwater planted aquarium. Named for its deep, keel-shaped body that resembles the blade of a hatchet, this small South American species is a true surface dweller — gliding just beneath the waterline with effortless grace, its marbled silver-and-brown patterning catching the light with every movement.

A Unique Presence at the Surface

Most aquarium fish occupy the mid and lower water column, leaving the surface layer visually empty. The Marbled Hatchetfish fills that space beautifully, adding life and movement to an often-neglected zone of the aquascape. Their distinctive silhouette and intricate marbled markings make them instantly recognizable and endlessly fascinating to watch as they school together near the surface.

Care Profile

• Scientific Name: Carnegiella strigata
• Origin: South America (Amazon Basin, Guyana)
• Size: Up to 3.5–4 cm
• Temperament: Peaceful; best kept in schools of 6 or more
• Diet: Omnivore — accepts small floating foods, micro pellets, frozen daphnia, and fruit flies
• Water Temperature: 24–28°C
• pH: 6.0–7.0 (prefers soft, slightly acidic water)
• Tank Size: Minimum 60 cm / 60L
• Water Level: Keep tank water level slightly lower; they are capable jumpers — a tight-fitting lid is essential

Aquascape Compatibility

Marbled Hatchetfish are completely plant-safe and peaceful with all community fish. They thrive in planted aquariums with floating plants or overhanging vegetation that mimics their natural Amazonian habitat. Avoid strong surface agitation — they prefer calmer surface conditions. An excellent choice for Nature Aquarium layouts and South American biotope setups.

Graceful, marbled, and utterly unique — the Marbled Hatchetfish brings life to the surface of your aquascape.