• Name:

    Eastern Rainbowfish

    (View AKA's)
  • Family: Melanotaeniidae
  • Species: Rainbowfish
  • Scientific Name: Melanotaenia splendida splendida
More Details

Also Know As:

| Splendid Rainbow

General info about Eastern Rainbowfish

These fish are pale blue in the front half and orange in the back half. They can reach up to 6 inches. To keep these fish in captivity water pH should be between 5.0 and 8.0 and water temperature should range from 70°F to 79°F. The tank should have a sandy substrate, dense vegetation and open areas for swimming. They are peaceful and can be kept in community aquariums, also, they should be kept in groups of at least 6.

Eastern Rainbowfish Diet & Nutrition

These fish are omnivorous. In the wild they feed on algae and small insects. In captivity they can be fed with dried foods supplemented with live foods like bloodworms and brine shrimp.

Determining Sex of Eastern Rainbowfish

Males are more colorful and larger than females.

Breeding & Spawning Eastern Rainbowfish

This species scatters its eggs in either vegetation or the substrate. The eggs take a week to hatch.

Common Diseases with Eastern Rainbowfish


Eastern Rainbowfish Origin

This species is native to Queensland, Australia.

Caution with Eastern Rainbowfish


Acclimating Eastern Rainbowfish

The water in which these fish are packaged is different from the water in the tank, since these fish are extremely sensitive to water conditions the acclimation process is very important. This process should never be rushed. Aquarium lights should be off for at least the first 4 hours of the fish in the new tank and it should not be fed in the first 24h. There are two acclimation methods: Floating Method and the Drip Method.

Floating method -  the aquarium lights should be off and lights in the room should be dim, the bag in which the fish is should be placed in the surface of the water to float for about 15 minutes, this allows the water in the bag to adjust to the water in the tank. The bag should then be cut under the knot and the top edge of the bag should be rolled down one inch, then ¼ cup of the aquarium water should be added to the bag, this step should be repeated every 4 minutes until the bag is full, then half the water of the bag should be discarded and the bag should be put to float again and ¼ cup of the aquarium water should be added to the bag every 4 minutes until the bag is full. Afterwards, the Discus can be moved into the aquarium.

Drip method – the aquarium lights should be off and lights in the room should be dim, the bag in which the fish is should be placed in the surface of the water to float for about 15 minutes, this allows the water in the bag to adjust to the water in the tank. The bag contents should be poured into a 1 gallon bucket that has never been cleaned with any chemicals, the fish should be enterally submerged. A siphon, using airline tubing, should be set up and a drip line should run from the main aquarium to the bucket. Several loose knots should be tied in the airline tubing to regulate flow. Sucking the end of the airline tube that goes to the bucket will begin a siphon, the flow should be regulated to 2 to 4 drips per second. Once the water in the buckets doubles, half should be discarded and the process should be repeated until it doubles again. Afterwards, the fish can be moved to the aquarium.

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Original Detail

Name Species Family Scientific Name More Detail Added by
Eastern Rainbowfish Rainbowfish Melanotaeniidae Melanotaenia splendida splendida

These fish are pale blue in the front half and orange in the back half. They can reach up to 6 inches. To keep these fish in captivity water pH should be between 5.0 and 8.0 and water temperature should range from 70°F to 79°F. The tank should have a sandy substrate, dense vegetation and open areas for swimming. They are peaceful and can be kept in community aquariums, also, they should be kept in groups of at least 6.

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Changed by users

Submitted Date Submitted By Status Action
2018-12-20 01:48:59 Joana Carvalho Approved View
2018-12-20 01:48:18 Joana Carvalho Dismissed View
2018-12-20 01:47:22 Joana Carvalho Dismissed View
2018-12-20 01:47:17 Joana Carvalho Dismissed View
2018-12-20 01:47:00 Joana Carvalho Dismissed View