Praecox Rainbowfish – Melanotaenia praecox
Praecox Rainbowfish – Melanotaenia praecox is extremely beautifully colored dwarf fish species. They are quite amusing to watch and are highly intelligent, aware of your presence around the aquarium. In the year 1994, Praecox Rainbowfish were identified as a rare fish species. The male Rainbow fish boast brightly colored red fins and the females boast yellow colored fins. The coloring on their body is a pinkish gray color. Their scales will feature a bright blue when the light is reflecting on them with a range of fascinating color from many tones of blues to lavender.
Common Name: Praecox Rainbowfish, Dwarf Neon Rainbowfish
Scientific Name: Melanotaenia praecox
Typical Adult Fish Size: 3 inches /8 cm
Natural Habitat: They inhabit moving jungle waters in Western New Guinea, Indonesia.
Ideal Tank Ecosystem: Praecox Rainbowfish-Melanotaenia praecox are a very popular aquarium fish, and don’t require a lot of attention. Rainbows are peaceful, community fish. A great addition to a nature aquarium/planted tank. When housing Praecox Rainbow’s in captivity, it is important to provide them with a large aquarium full of plants and adequate room for their active swimming habits. They have been known to jump out of an aquarium when stressed. We recommend that your aquarium have a full canopy.
Recommended Aquarium Capacity: 55 gallon /240 litre
Species Compatibility: other peaceful, community fish like Molly, Guppies, Platy, Tetras.
Care Level: Beginner to Intermediate
Aquarium Water Temperature: 23 – 32°C (73 – 89°F)
Aquarium Water pH: Range pH 4.5 – 7.5
Feeding: Feed once or twice a day. They should consume all food in a matter of minutes. Any leftover food in the aquarium should be removed with a fine fish net. Foods leftover in the water will alter water parameters and the quality of water in their environment. A flake food diet is a great food base for the Rainbow, however should be offered live foods as well to ensure the healthiness of these type of dwarf fish species. Live or frozen Brine Shrimp, bloodworms, fruit flies, micro worms, mosquito larvae, diced up Earthworms and daphnia are great alternatives.
Sexing: Males have red fins while females have yellow to light orange fins. The males breeding stripe from top of nose to dorsal fin flashes yellow during displays.
Breeding: Praecox Rainbowfish – Melanotaenia praecox will deposit its eggs in vegetation or other suitable substrate and plants like Java moss. It’s best spawned in a pair or a group with a single male and two or three females. Females are able to lay many eggs per day. The adults can be added to spawning tank and left for approximately a week or so, until the first fry are seen. You can also remove the eggs from the substrate manually. Males can be aggressive when pairing with females. Always try to include many hiding spots into their habitat so that they have recluse from other fish. Additionally, providing lots of hiding spots for these fish will decrease their stress levels and encourage a natural, safe, tranquil aquatic habitat.
Other Considerations: These fish are quite popular in the hobby. Ensure that your aquarium water has been cycled before adding these type of rainbow fish.
Axelrodi Rainbowfish – Melanotaenia herbertaxelrodi
Eastern Rainbowfish – Melanotaenia splendida
Turquoise Rainbowfish – Melanotaenia lacustris
Threadfin Rainbowfish – Iriatherina werneri
Boesemani Rainbowfish – Melanotaenia boesemani
Madagascan Rainbowfish – Bedotia madagascariensis
Celebes Rainbowfish – Telmatherina ladigesi
Tropheus Moorii Red Rainbow – Tropheus sp. Kasanga
Blood Red Molly – Poecilia latipinna
Silver Molly – Poecilia sphenops