Platinum Hatchetfish

Adult hatchetfish reach a length of about 6–7 cm. Their body has a characteristic wedge shape, strongly compressed laterally, making them resemble an axe blade. The belly of these fish is silvery, while the back is colored in yellow tones with a golden sheen. Under certain lighting, bluish stripes may appear on their body.

The natural habitat of this species covers South America. Among all hatchetfish, it is the most widespread, found almost everywhere in major river systems such as the Amazon, Orinoco, and Paraná. Preferred habitats include stagnant waters: quiet backwaters, swamps, and floodplain lakes, where they often stay near abundant surface vegetation.

This peaceful and benevolent species prefers to live in schools of its own kind or in the company of other calm fish. Good tank mates include small tetras, Corydoras and Plecostomus catfish, as well as Geophagus cichlids and Apistogramma, and many other species. There is a common misconception that these fish can perform long "flights" above the water due to their large pectoral fins resembling wings. However, research conducted in 1995 disproved this legend.

For a comfortable group of ten hatchetfish, an aquarium of at least 250 L will be required. The aquascape can be arbitrary, but special attention should be paid to the upper water column. It is important to provide both open areas for swimming and zones with dense thickets of floating plants, which will serve as cover. The choice of other decorative elements is not critical and depends on the aquarist's preferences or the needs of other inhabitants. Long-term and successful keeping is possible with the maintenance of high water quality (low pollutant content), stable temperature, and hydrochemical parameters. Golden hatchetfish adapt well to a fairly wide range of pH and dGH values, so maintaining them at the required level will not be difficult with regular aquarium maintenance and the use of necessary equipment. This primarily applies to filtration systems. It should also be noted that the Platinum Hatchetfish can indeed jump out of the water when threatened, but this fact has nothing to do with the idea of "flight"; many fish avoid such maneuvers.

In home aquariums, these fish become omnivorous, although in nature their diet consists mainly of small insects and other invertebrates. An important requirement for food is its buoyancy, as hatchetfish can only feed from the water surface.

To date, there are no documented cases of successful breeding of hatchetfish in amateur aquariums. In nature, the spawning of these fish coincides with seasonal changes, such as periods of rain and drought, as well as migration to flooded forest areas. It is there, in quiet, food-rich backwaters, that the fry appear. Recreating such conditions in a home environment presents significant difficulties for a beginner aquarist.

Maintaining a stable biological system, providing a balanced diet, and eliminating stress factors (e.g., harassment by aggressive tank mates) are the best guarantees for preserving fish health. If the first signs of illness appear, the first thing to pay attention to is precisely these three aspects, as deviations have likely occurred in one of them. As a rule, eliminating the problem leads to self-recovery. However, if the immune system proves to be insufficiently strong, medicinal treatment may be required. More detailed information on symptoms and treatment methods can be found in the "Diseases of Aquarium Fish" section.

When choosing a Platinum Hatchetfish, it is important to ensure there are no external injuries, as the fish are prone to trauma during transport and jumping. Healthy individuals should actively swim in the upper water layers, have clean fins without signs of rot or white film, and display natural schooling activity. Avoid purchasing fish with sunken bellies or signs of emaciation, as this species can be sensitive to store conditions and stress from relocation. It is recommended to acquire a group of 6 or more individuals, as solitary keeping leads to significant stress and timidity.