Pygmy Hatchet fish
The Pygmy Hatchetfish, scientifically known as Carnegiella myersi, is a peaceful schooling fish that occupies the upper water layers of the aquarium. Despite its small size, it requires a spacious aquarium to thrive. To create an ideal habitat for these fish, it is recommended to have a well-planted tank with some large plants that extend to the water's surface, providing hiding spots for the fish.
Pygmy Hatchetfish exhibit a unique behavior of swimming against the current, so a strong filter is necessary to simulate their natural environment. Additionally, it's important to ensure the aquarium is well-covered as these fish are excellent jumpers and may leap out of the tank if given the opportunity.
In summary, the Pygmy Hatchetfish is a peaceful species that prefers to swim in the upper water layers. To accommodate their needs, provide them with a large aquarium, ample plant cover reaching the surface, a strong filter to mimic their natural environment, and a well-secured tank cover to prevent any jumping incidents.