Silver Hatchetfish (Gasteropelecus sternicla)
The Silver Hatchetfish, also known as the Common Hatchetfish, is a uniquely shaped fish with a slender body and a deep ‘belly’. Its pectoral fins are positioned high on the body, and it has an upturned mouth, typical of surface-dwelling fish.
This species thrives in a planted aquarium with a few floating plants. As a schooling fish, it should be kept in a group of six or more to promote natural behavior and reduce stress.
A hood is recommended to prevent jumping, as the Silver Hatchet is known to leap out of the tank. Maintaining excellent water quality is essential for its health and vitality.
| Key Features | Details |
|---|---|
| Body Shape | Slender with deep belly |
| Fin Position | Pectoral fins set high on body |
| Mouth Type | Upturned, surface-dwelling |
| Group Size | 6 or more fish |
| Water Conditions | Planted tank with floating plants, soft water, low pH (possible) |
FAQ
What kind of tank setup is best for Silver Hatchetfish?
A planted aquarium with a few floating plants is ideal. The fish prefers a well-planted environment and benefits from surface cover.
How many Silver Hatchetfish should I keep?
It is best to keep at least six fish together, as they are schooling fish and thrive in groups.
Can Silver Hatchetfish jump out of the tank?
Yes, they are known to jump, so a tank hood is necessary to prevent escape.
Una Parsons –
I kept six Silver Hatchetfish in a 20-gallon planted tank with floating plants. They are active and peaceful, especially near the surface. The hood was essential—two of them jumped out on the first day. Water quality has stayed stable with regular testing. They seem to enjoy the environment and swim in tight groups.
Michelle Chapman –
The fish are visually striking with their unique shape. I added floating plants and kept them in a group of seven. They don’t eat much, but I feed them fruit flies and mosquito larvae weekly. They stay active and don’t stress the tank.
Warren Burgess –
After a month, the hatchets are thriving. I’ve maintained soft water and low pH, which I believe supports their well-being. The tank looks more dynamic with them swimming near the surface. I recommend keeping them in a group and using a hood.