Male Blue Eye Dwarf Rainbow Fish
Female Blue Eye Dwarf Rainbow Fish
School of Blue Eye Dwarf Rainbow Fish in a freshwater aquarium fish tank
Male Pseudomugil luminatus in a freshwater aquarium fish tank
Blue Eye Dwarf Rainbow Fish (Pseudomugil luminatus) native to New Guinea, Indonesia
Blue Eye Dwarf Rainbow Fish (Pseudomugil luminatus)

Blue Eye Dwarf Rainbow Fish (Pseudomugil luminatus)

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Regular price$9.99
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Gertrude's Spotted Blue Eye Rainbowfish (scientific name: Pseudomugil Gertrudea) is a variant of the blue eye rainbowfish. The males are normally seen in moderately compressed and elongated bodies covered with iridescent yellow and blue coloration, while the females are typically smaller and have an attractive orange-yellow hue. Their fins are the highlight parts of their appearance as they display the special white silvery-grey or yellow with rounded or oblong dark spots scattered all over.

The beautiful Gertrudea’s Spotted Blue Eye Rainbowfish is an outgoing, hardy, and easy-to-care-for species. In wild habitats, they are mostly found in densely floating planted areas with quite low water hardness. Hence, they appreciate home aquariums sharing similar conditions. The species is also known for its inability to cope with various ranges of water parameters; therefore, creating and maintaining a stable living condition is crucial for them to thrive.

Gertrudea’s Spotted Blue Eye Rainbowfish is a shoaling fish. They are normally kept in groups of 8 or more and in no circumstances be kept in single. Otherwise, the fish tends to be frightened and get stressed easily. As a completely peaceful species, Gertrudea’s Spotted Blue Eye Rainbowfish can be housed with other fish as long as they have comparable size, disposition, and living requirements. Be careful when choosing their tank mates since your Gertrudea’s Spotted Blue Eye Rainbowfish are timid and easily out compete for food by more aggressive eaters. Providing a lot of swimming space and hiding places is important if you keep many males in the same tank. It is reported that the dominant males may show harassment behaviors toward the subdominants in certain cases. 

Some experienced aquarists tip that your aquarium may look more attractive if Gertrudea’s Spotted Blue Eye Rainbowfish are kept with dark substrate. In this case, their coloration will be more intense and surely a focal point of the tank.

What You Can Expect From This Fish:

  • Peaceful, hardy, and out-going species 
  • Safe with plants, especially floating ones
  • One of among the smallest blue eye rainbowfish


  • Temperature: 73° - 86°F (23° - 30°C) 
  • pH: 5.0 - 7.5
  • KH: 12-15
  • Minimum tank size: 10 gallons or more


  • Diet: Flake foods, small frozen or live meaty food (such as baby brine shrimp and daphnia) for optimal coloration
  • Social behavior: Peaceful, schooling/ shoaling, outgoing
  • Origin: Indonesia, New Guinea, Australia
  • Average adult size: 1.2 - 1.5 inches (3 - 3.8 cm)
  • Average purchase size: 0.5 - 1 inches (1.2 - 2.5 cm)

See more details about care guide for Gertrudea’s Spotted Blue Eye Rainbowfish here.

This is only apply to live fish order.

Live Arrival Guarantee:

We have a lot of experience with shipping live fish orders. In 2021, Our records showed that we only have a 0.5 % Dead on Arrival rate for all live fish orders, compared to the industry standard is at 1.5%. This means that out of 1000 live orders that we shipped to our customer only 5 orders would have fish that arrived dead.

At Splashy Fish, we ensure that our customers are happy and satisfied with their orders. We offer a 100% Live Arrival Guarantee on all of our animals that are shipped to the customer via USPS, UPS, and FedEx.

Splashy Fish has the right to void Live Arrival Guarantee protection if these circumstances include: 

  1. The customer has chosen USPS First Class Mail as a shipped method. 
  2. Shipping address to a PO Box
  3. The order was refused delivery by the customer. 
  4. The order was held for pick up at USPS, UPS, FedEx offices no longer than 24 hours after the last update on the tracking number. 
  5. Live Arrival Guarantee claim does not include all the requirements mentioned below
  6. Live Arrival Guarantee claim made after the arrival period is mentioned below. 
  7. The Fish/Animal have to be in original packaging. 

Live Arrival Guarantee Claim Period: 

For Live Fish and other invertebrates: one and a half hours (1.5 hours) of posted delivery time or customer received time. 

For Snails48 hours of posted delivery time or customer received time. 

How to claim for Splashy Fish's Live Arrival Guarantee: 

If there is an incident when your fish are delivered "dead on arrival,” 

  1. Take 1 picture of the shipping box and the shipping label. 
  2. For live fish and other invertebrates: Take 2 pictures of each of the fish bags that is dead on arrival (the pictures have to show the bag in its original condition, unopened with the original rubber band)
For Snail: Snail generally take longer to acclimate, our customer will have 48 hours of posted delivery time to claim for Live Arrival Guarantee. Please place the snail at the one corner of the tank and within 48 hours and any snail didn't move. Please take pictures of the snail where the opening. 
  1. Send us an email to with the subject line: DOA and Your Order Number OR messaged us on our social media
  2. Body of the text: Your tracking number
  3. The claim must be sent within the claim period mentioned above. 

After submitting all the information required above it will take us 1 to 3 business days to determine the cause of dead on arrival. If the claim was valid and approved by our team, There is two option for you to choose from:

  1. Complimentary one-time replacement of the fish you ordered (pending current inventory availability). Customers are responsible for the replacement shipping charge. 
  2. Received the store credit for future purchase of the dead on arrival fish excluding the shipping cost. 

If the Live Arrival Guarantee claim doesn't include all the requirements listed above, Splashy Fish has all the rights to reject your claim.



We ship all of the customer orders from our warehouse located in Springfield, VA. We pack and ship our orders depending on the orders with the exception of someday we cannot ship out live fish.

All Live Fish orders will be shipped out on Tuesday and Wednesday each week for overnight shipping by UPS.

Monday to Saturday:  We will pack and ship out all orders that do not contain live fish. 

Sunday: (Splashy Day) Today is the day we let our hard-working team members and our fish to destress and ready for the following week's shipment.

For more information regarding about shipping please visit us our Shipping Policy and Schedule

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