Spotted Blue-Eye Rainbowfish - Pseudomugil gertrudae "Aru IV"
Spotted Blue-Eye Rainbowfish – Aru IV Locality (Pseudomugil gertrudae “Aru IV”)
The Spotted Blue-Eye Rainbowfish “Aru IV” is a stunning locality form of Pseudomugil gertrudae from the Aru Islands, prized for its bright blue eyes, delicate spotted fins and lively displaying behaviour. Males develop beautiful patterned dorsal, anal and caudal fins with yellow, black and translucent markings, while their small size makes them ideal for mature planted aquariums and carefully planned nano-style community setups. This is a peaceful shoaling species, but it does best with calm tank mates and excellent water quality rather than in a busy general community aquarium.
Common Name:
Spotted Blue-Eye Rainbowfish. Also commonly referred to as Gertrude’s Blue-Eye, Spotted Blue-Eye, Delicate Blue-Eye, Northern Blue-Eye or Aru IV Spotted Blue-Eye.
Scientific Name (Latin):
Pseudomugil gertrudae “Aru IV”
Maximum Size:
Around 3–4 cm in captivity, with males usually showing the most extended fins and strongest display colouration.
Water Type:
Freshwater
Origin / Natural Habitat:
This locality form is associated with the Aru Islands of Indonesia. The wider species is found across northern Australia, southern New Guinea and the Aru Islands. In the wild, Spotted Blue-Eyes are usually found in shallow, heavily vegetated waters such as swampy margins, small creeks, backwaters, lily lagoons and slow-moving streams with plant cover, submerged wood and leaf litter.
Water Parameters:
Temperature: 22–28°C
pH Range: 5.5–7.5
Hardness: soft to moderately hard water
Temperament:
Peaceful and social. It is best kept with other small, calm fish that will not bully it, outcompete it or nip at the males’ extended fins. Avoid large, boisterous or aggressive tank mates.
Diet:
Micro-predatory omnivore. It should be offered fine quality flake, micro pellets, powdered foods and small frozen or live foods such as baby brineshrimp, cyclops, daphnia and microworms. Small, frequent feeds are better than large foods, as this species has a small mouth.
Minimum Tank Size:
A practical recommendation is at least 40–60 litres for a small group, with larger aquariums preferred for bigger groups or mixed community setups.
Behaviour & Activity:
This is an active mid-to-upper level shoaling fish that should be kept in a group of at least 8, ideally 10 or more. Males regularly display to each other by flaring their fins and showing off their colour, especially when females are present. It is most confident in a mature planted aquarium with floating plants, fine-leaved plants, open swimming areas and gentle to moderate flow. A secure lid is recommended, as small rainbowfish and blue-eyes can jump.
Aquarium Category:
Community Fish
This species is peaceful and suitable for a specialist nano community aquarium. Good tank mates include small rasboras, peaceful tetras, small Corydoras, Otocinclus, dwarf shrimp in established setups, and other gentle nano fish that enjoy similar conditions. It is not ideal with fin nippers, aggressive fish, large predators or very fast-feeding species that may prevent it from getting enough food.
Special Requirements or Care Notes:
Best kept in a mature, stable aquarium with excellent water quality, gentle filtration and plenty of plant cover. It should not be added to brand-new or unstable aquariums. Floating plants, leaf litter, botanicals and subdued lighting can help bring out more natural behaviour. If breeding or maintaining locality strains, avoid mixing Aru IV with other Pseudomugil gertrudae locality forms to preserve the line.
Suitable for:
Intermediate fishkeepers
Availability:
Occasional in trade, especially as a locality strain
All images are a visual representation of the fish you will receive, made to be as accurate as possible. Please note that Mother Nature is a wonderful thing, and variation in patterns and colours will occur — that is part of the unique beauty of these animals.
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Spotted Blue-Eye Rainbowfish - Pseudomugil gertrudae "Aru IV"
Spotted Blue-Eye Rainbowfish - Pseudomugil gertrudae "Aru IV"
Spotted Blue-Eye Rainbowfish – Aru IV Locality (Pseudomugil gertrudae “Aru IV”)
The Spotted Blue-Eye Rainbowfish “Aru IV” is a stunning locality form of Pseudomugil gertrudae from the Aru Islands, prized for its bright blue eyes, delicate spotted fins and lively displaying behaviour. Males develop beautiful patterned dorsal, anal and caudal fins with yellow, black and translucent markings, while their small size makes them ideal for mature planted aquariums and carefully planned nano-style community setups. This is a peaceful shoaling species, but it does best with calm tank mates and excellent water quality rather than in a busy general community aquarium.
Common Name:
Spotted Blue-Eye Rainbowfish. Also commonly referred to as Gertrude’s Blue-Eye, Spotted Blue-Eye, Delicate Blue-Eye, Northern Blue-Eye or Aru IV Spotted Blue-Eye.
Scientific Name (Latin):
Pseudomugil gertrudae “Aru IV”
Maximum Size:
Around 3–4 cm in captivity, with males usually showing the most extended fins and strongest display colouration.
Water Type:
Freshwater
Origin / Natural Habitat:
This locality form is associated with the Aru Islands of Indonesia. The wider species is found across northern Australia, southern New Guinea and the Aru Islands. In the wild, Spotted Blue-Eyes are usually found in shallow, heavily vegetated waters such as swampy margins, small creeks, backwaters, lily lagoons and slow-moving streams with plant cover, submerged wood and leaf litter.
Water Parameters:
Temperature: 22–28°C
pH Range: 5.5–7.5
Hardness: soft to moderately hard water
Temperament:
Peaceful and social. It is best kept with other small, calm fish that will not bully it, outcompete it or nip at the males’ extended fins. Avoid large, boisterous or aggressive tank mates.
Diet:
Micro-predatory omnivore. It should be offered fine quality flake, micro pellets, powdered foods and small frozen or live foods such as baby brineshrimp, cyclops, daphnia and microworms. Small, frequent feeds are better than large foods, as this species has a small mouth.
Minimum Tank Size:
A practical recommendation is at least 40–60 litres for a small group, with larger aquariums preferred for bigger groups or mixed community setups.
Behaviour & Activity:
This is an active mid-to-upper level shoaling fish that should be kept in a group of at least 8, ideally 10 or more. Males regularly display to each other by flaring their fins and showing off their colour, especially when females are present. It is most confident in a mature planted aquarium with floating plants, fine-leaved plants, open swimming areas and gentle to moderate flow. A secure lid is recommended, as small rainbowfish and blue-eyes can jump.
Aquarium Category:
Community Fish
This species is peaceful and suitable for a specialist nano community aquarium. Good tank mates include small rasboras, peaceful tetras, small Corydoras, Otocinclus, dwarf shrimp in established setups, and other gentle nano fish that enjoy similar conditions. It is not ideal with fin nippers, aggressive fish, large predators or very fast-feeding species that may prevent it from getting enough food.
Special Requirements or Care Notes:
Best kept in a mature, stable aquarium with excellent water quality, gentle filtration and plenty of plant cover. It should not be added to brand-new or unstable aquariums. Floating plants, leaf litter, botanicals and subdued lighting can help bring out more natural behaviour. If breeding or maintaining locality strains, avoid mixing Aru IV with other Pseudomugil gertrudae locality forms to preserve the line.
Suitable for:
Intermediate fishkeepers
Availability:
Occasional in trade, especially as a locality strain
All images are a visual representation of the fish you will receive, made to be as accurate as possible. Please note that Mother Nature is a wonderful thing, and variation in patterns and colours will occur — that is part of the unique beauty of these animals.
Original: $6.71
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$2.35Product Information
Product Information
Shipping & Returns
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Description
Spotted Blue-Eye Rainbowfish – Aru IV Locality (Pseudomugil gertrudae “Aru IV”)
The Spotted Blue-Eye Rainbowfish “Aru IV” is a stunning locality form of Pseudomugil gertrudae from the Aru Islands, prized for its bright blue eyes, delicate spotted fins and lively displaying behaviour. Males develop beautiful patterned dorsal, anal and caudal fins with yellow, black and translucent markings, while their small size makes them ideal for mature planted aquariums and carefully planned nano-style community setups. This is a peaceful shoaling species, but it does best with calm tank mates and excellent water quality rather than in a busy general community aquarium.
Common Name:
Spotted Blue-Eye Rainbowfish. Also commonly referred to as Gertrude’s Blue-Eye, Spotted Blue-Eye, Delicate Blue-Eye, Northern Blue-Eye or Aru IV Spotted Blue-Eye.
Scientific Name (Latin):
Pseudomugil gertrudae “Aru IV”
Maximum Size:
Around 3–4 cm in captivity, with males usually showing the most extended fins and strongest display colouration.
Water Type:
Freshwater
Origin / Natural Habitat:
This locality form is associated with the Aru Islands of Indonesia. The wider species is found across northern Australia, southern New Guinea and the Aru Islands. In the wild, Spotted Blue-Eyes are usually found in shallow, heavily vegetated waters such as swampy margins, small creeks, backwaters, lily lagoons and slow-moving streams with plant cover, submerged wood and leaf litter.
Water Parameters:
Temperature: 22–28°C
pH Range: 5.5–7.5
Hardness: soft to moderately hard water
Temperament:
Peaceful and social. It is best kept with other small, calm fish that will not bully it, outcompete it or nip at the males’ extended fins. Avoid large, boisterous or aggressive tank mates.
Diet:
Micro-predatory omnivore. It should be offered fine quality flake, micro pellets, powdered foods and small frozen or live foods such as baby brineshrimp, cyclops, daphnia and microworms. Small, frequent feeds are better than large foods, as this species has a small mouth.
Minimum Tank Size:
A practical recommendation is at least 40–60 litres for a small group, with larger aquariums preferred for bigger groups or mixed community setups.
Behaviour & Activity:
This is an active mid-to-upper level shoaling fish that should be kept in a group of at least 8, ideally 10 or more. Males regularly display to each other by flaring their fins and showing off their colour, especially when females are present. It is most confident in a mature planted aquarium with floating plants, fine-leaved plants, open swimming areas and gentle to moderate flow. A secure lid is recommended, as small rainbowfish and blue-eyes can jump.
Aquarium Category:
Community Fish
This species is peaceful and suitable for a specialist nano community aquarium. Good tank mates include small rasboras, peaceful tetras, small Corydoras, Otocinclus, dwarf shrimp in established setups, and other gentle nano fish that enjoy similar conditions. It is not ideal with fin nippers, aggressive fish, large predators or very fast-feeding species that may prevent it from getting enough food.
Special Requirements or Care Notes:
Best kept in a mature, stable aquarium with excellent water quality, gentle filtration and plenty of plant cover. It should not be added to brand-new or unstable aquariums. Floating plants, leaf litter, botanicals and subdued lighting can help bring out more natural behaviour. If breeding or maintaining locality strains, avoid mixing Aru IV with other Pseudomugil gertrudae locality forms to preserve the line.
Suitable for:
Intermediate fishkeepers
Availability:
Occasional in trade, especially as a locality strain
All images are a visual representation of the fish you will receive, made to be as accurate as possible. Please note that Mother Nature is a wonderful thing, and variation in patterns and colours will occur — that is part of the unique beauty of these animals.
