Главная 7 Aquarium fish 7 Iriaterina Werner family of iris – description, content

Iriaterina Werner family of iris – description, content

Iriaterina Werner (Iriatherina werneri) family of iris or melanotinyh – description, necessary parameters of the aquarium, food, conditions of detention, breeding.

Distributed in Australia, the province of Papua in Indonesia and on the island of New Guinea.


It prefers slow-moving rivers, freshwater swamps and creeks containing clear water with an abundance of macrophytes. It is most often found in areas densely covered with vegetation less than 1.5 m deep and is often associated with floating lily leaves.

The temperature range in natural habitats is from 22 to 32 degrees and pH 5.2 – 7.5.

Description: under natural conditions, the size of the fish is about 7 cm, but under conditions of an aquarium, the males grow no more than 5 cm, and the females – 4 cm. Very graceful and spectacular fish, the colors of which may vary depending on the lighting.

Males are noticeably larger than females and have a brighter color.

male and female Iriaterina werner

Aquarium parameters: a very active and lively fish that requires free space for swimming, the aquarium for Iriaterina needs a spacious, not less than 60 cm long. Plant thickets should be thick, but should be located near the walls of the aquarium so as not to hinder the fish from moving.

For Iriaterina, floating plants are desirable and filtration and aeration in water is mandatory. A third of the water must be replaced weekly.

Comfortable temperature regime – 22-30 degrees, pH: 5.0 – 8.0.

Nutrition: at Iriaterina Werner (Iriatherina werneri) It has a special structure of the mouth, so it eats mainly food that fell on the leaves of plants and settled on the aquarium walls.

The fish are omnivorous, equally eagerly eat dry, frozen and live food, the size of which should be small, even in adults a very tiny mouth.

Iriaterina Werner prefers small live foods, such as Artemia.

Content: peaceful fish that feel comfortable only in a flock. In the absence of relatives adjacent to the fish, similar in behavior and size. Iriatherins are extremely mobile and impetuous, but if frightened, they can hover among the thickets of plants.

There is a continuous struggle for power among the males, as a result of which a peculiar hierarchical structure can even be established. Clarifying relationships usually goes without fights.

Aquarium with Werner’s Iriaterines 80x40x35cm – 110l – Lighting: 4x24w T5 14 hours / day – CO2.

Plants: Anubias barteri var. nana, bolbitis

Iriaterines float in the middle and upper water layer. Compatible with any small and non-aggressive fish.

The best neighbors will be other types of iris, and the best “home” for 15 iriaterin will be a species 70-liter aquarium.

Fish and shrimp: Ancistrus spp., Aphyocharax anisitsi, Caridina multidentata, Somiki panda, Gasteropelecus sternicla, Hyphessobrycon herbertaxelrodi, Iriatherina werneri, Neocaridina heteropoda, Neocaridina heteropoda var. red Cherry, Otocinclus affinis, Prionobrama filigera.

Breeding: The marriage games and the spawning process. The male chooses any plant he likes, not allowing him to other males. Waiting for a female near him, the fish hide in the thicket, where the female spawns.

The males during the prespawning games swiftly move their fins, due to which they resemble fluttering butterflies. Females spawn every day, laying eggs on floating plants, which must be in the aquarium.

Spawning substates can serve as Javanese moss.

The larvae hatch on days 5-7 and, despite their microscopic size, immediately need to be fed.

If there are a large number of plants in the aquarium, Werner’s Iriaterina will slowly multiply without external intervention. Adults rarely eat their offspring. But for numerous breeding, this method is not suitable.

To multiply the fish population many times will require a spawning aquarium with three females per male.

example of a common (species) and separate spawning aquarium for Werner Iriaterin

The volume of the aquarium for spawning should be at least 30 liters, a large number of plants and moss in it is necessary for laying eggs on them. Every 5 days, the moss needs to be changed, and the moss pieces with attached caviar should be placed in another aquarium.

Water temperature for eggs is 24-28 degrees.

Adult female after spawning with adhering unopened eggs

Growing fry: Werner’s Iriaterin’s fry are inactive and extremely lazy. The feeding process is complicated by the fact that you need to provide a very large amount of feed in the water for the fry, who expect that the feed itself will get into their mouths. In the first 2 weeks saline water rotifers and ciliates will be suitable food.

Then the feeding process is simplified, the fry can eat Artemia nauplii. Due to the peculiarities in the process of spawning, Iriaterin fry may be of different ages.

In this regard, even in the presence of older fry, you must not stop feeding the fish with starter feed.

Now teens about 6 weeks and they are ready to breed

If the fry eat in sufficient quantities, their growth can reach 1 cm per month. After 6 weeks, sex differences appear, in half a year Iriaterina Werner (Iriatherina werneri) reaches puberty.

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