Three-striped Nannostomus (Nannostomus Trifasciatus)

2023 Author: Molly Page | [email protected]. Last modified: 2023-07-31 03:34

The three-lane nannostomus, or the three-lane nannostomus (Threestripe pencilfish), is a small funny haracin fish, endemic to South America. It is not picky about the chemical parameters of water, but it does not tolerate "dirty" water. In aquariums it takes any food. These are schooling, peace-loving fish, which should preferably be kept in groups of at least 10 individuals. No particular difficulties were noticed with reproduction.

Habitat: South America - the western part of the Amazon Basin (Brazil, Peru, Colombia, Bolivia, Guyana and Suriname).

Habitat: streams and rivers of tropical forests with a slow current, swamps, floodplain lakes. Prefers places with dense aquatic vegetation.

Description: The shape of the body resembles an elongated torpedo. Not every fish has an adipose fin. The caudal fin is two-lobed, with rounded edges. The mouth is terminal. The dorsal fin is located almost in the middle of the body.

Color:the back is olive, the side and belly are silvery-white. Three stripes running along the entire body are separated by golden stripes, the upper fin and foretail are bright red. The front and pectoral fins are transparent, and the ventral fins are red, bordered by a green-blue stripe. A thin stripe runs through the snout along the entire body. Some males have an additional row of red spots between the middle and upper stripes.

With the onset of dusk, the color of the fish changes - three transverse dark stripes appear on the fish body, thanks to which the nannostomuses got their name.

Size: 3-6 cm.

Lifespan: about 4 years.

Aquarium: specific or general.

Sizes: 60-70 liters for a school of 8-10 fish.

Water: pH 5.5-6, dH 1-6 °, aeration, filtration through peat, weak flow. Weekly water changes up to 20-30%. A few handfuls of dry oak, beech or Indian almond leaves are thrown into the water. Every two weeks, the leaves are changed to new ones. Three-striped nanostomuses can tolerate a relatively wide range of hydrochemical values of water, but they absolutely cannot tolerate the presence of nitrogen compounds in water.

Temperature: 24-28 ° C.

Lighting: dim.

Substrate: dark river sand.

Plants: thickets of living plants (pinnate, kabomba), including floating ones (salvinia, ludwigia).

Registration: driftwood, roots, various decor, plants, free swimming space.

Feeding: live, frozen and plant foods of suitable size. Takes feed from the surface of the water.

Behavior: schooling fish. In larger groups they feel more confident, therefore it is recommended to keep at least 8-15 individuals. In the daytime, nannostomes stay alone, and at dusk they huddle in a flock. They can stand in one place for a long time, and then they begin to swim around the aquarium again. They become aggressive in cramped aquariums.

Character: peaceful, males tend to compete with each other for the attention of females.

Water zone: middle and upper water layer.

May be kept with: Commensurate, non-aggressive fish.

Not to be kept with: large aggressive fish.

Related article Dwarf nannostomus (Nannostomus marginatus)

Fish farming:in aquariums it is difficult because it is difficult to find appropriate manufacturers. Spawning is paired in a general or separate aquarium. An increase in atmospheric pressure stimulates spawning. A spawning plant with a volume of 30-50 liters, a water level of 15-20 cm, a separator mesh and several bunches of small-leaved plants (pinwort, Javanese moss, hornwort, nitella, fontinalis, Ceylon fern) are placed on the bottom. Diffused lighting. Water parameters: dH up to 2 °, pH about 6, T 27-28 ° C. Fish are planted in the spawning grounds in the evening, and spawning usually occurs at dawn. After spawning, the plants are removed and the aquarium is darkened.

Sex differences: the male is slimmer and brighter than the female.

Puberty: begins at the age of 8-10 months.

Number of eggs: up to 100 small eggs.

Incubation period: about a day.

Offspring: fry swim for 4-5 days. The water level is lowered to 7 cm, the lighting is dim. The fry do not tolerate water changes well.

Feeding juveniles: starting food - ciliates, rotifers, then - nauplii of brine shrimp and cyclops.

Jigging from parents: after spawning, the producers are planted.