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SILVER HATCHETFISH (thoracocharax stellatus)

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Scientific name: Thoracocharax stellatus

Common name: Spotfin hatchetfish

Family: Gasteropelecidae

Usual size in fish tanks: 7 - 8 cm (2.76 - 3.15 inch)


Recommended pH range for the species: 6.3 - 7.4

Recommended water hardness (dGH): 3 - 15°N (53.57 - 267.86ppm)

0°C 32°F30°C 86°F

Recommended temperature: 23 - 29 °C (73.4 - 84.2°F)

The way how these fish reproduce: Spawning

Where the species comes from: South America

Temperament to its own species: peaceful

Temperament toward other fish species: peaceful

Usual place in the tank: Top levels

Food and feeding

Use a quality flake for the staple diet but Spotfin hatchetfish will require meaty foods in the form of blood worms and brine shrimp on a regular basis.


South America; Spotfin hatchetfish are found in the still waters of Brazil and Argentina.


Females will be larger than the males so sexing individual specimens is not easy, best to compare a group of specimens.


As of yet, Spotfin hatchetfish have not been bred successfully in the aquarium, in the wild they are egg scatterers.


The expected life span for Thoracocharax stellatus is 7 years.

Short description

Always use a tight fitting lid when keeping Thoracocharax stellatus; they are excellent jumpers as in the wild they will leap out of the water to catch insects for food. They require optimum water conditions so are not ideal for beginners. Always keep them in groups as they are a schooling fish.