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Forktail blue-eye, photographed on a transparent background

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Forktail blue-eye

Pseudomugil furcatus

It drifts and twitches up top with fins spread; males display all day.

The Forktail blue-eye (Pseudomugil furcatus) is a tropical freshwater fish of the family Pseudomugilidae. It swims in midwater, close to the bottom. Adults grow to about 5 cm. In the aquarium it needs a tank at least 60 cm long and water at 23–28 °C.

Size
5 cm
Smallest tank
60 cm
Temperature
23–28 °C
Care
Moderate

In the aquarium

Temperature23–28 °C
pH6.5–7.8
Hardness5–15 °dGH
Temperament
Peaceful
Diet
Carnivore
Activity
Moderate
Water layer
Surface
Group
Happiest in a group of 8 or more
Plants
Plant safe
Drawn to scale in a 60 cm tank

These values are compiled from real species data, and the LumaReef simulation is built to keep them true to life.

Which tank it fits

  • Nano60 cm · 65 litres21 of them
  • Standard90 cm · 180 litres60 of them
  • Wide120 cm · 300 litres100 of them
  • Living room180 cm · 650 litres216 of them
  • Showcase250 cm · 1,200 litres400 of them
  • Gallery300 cm · 1,440 litres480 of them

Who it lives with

In the wild

Water type
Freshwater
Climate zone
Tropical
Habitat
Midwater, close to the bottom
Aquarium trade
Traded commercially

Classification

  1. OrderAtheriniformes
  2. FamilyPseudomugilidae
  3. GenusPseudomugil
  4. SpeciesPseudomugil furcatus
  5. Described byNichols, 1955

In other languages

Russian
Вильчатая синеглазка

Quick answers

Forktail blue-eye size: how big does it get?
Adults reach about 5 cm. Record sizes among the 4 Pseudomugil species on LumaReef: 3.5 cm (Blueback Blue Eye) to 7 cm (Pacific Blue Eye).
Forktail blue-eye tank size: what is the minimum?
A tank at least 60 cm long. In LumaReef that is the Nano tank or larger.
Forktail blue-eye water parameters: what does it need?
Temperature 23–28 °C, pH 6.5–7.8, hardness 5–15 °dGH. Close to what most Pseudomugil on LumaReef need (21–28 °C).
Forktail blue-eye tank mates: what can it live with?
It gets along with 80 of the 99 freshwater species in the catalogue, such as Emperor tetra, Zebra danio, and Cherry barb.
Forktail blue-eye: alone or in a group?
Keep at least 8 together.
Forktail blue-eye and plants: is it plant safe?
Yes, it leaves plants alone.

All Pseudomugilidae speciesAll species A–Z

Sources

Forktail blue-eye: compiled from these references.