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Neon Dwarf Rainbowfish | Melanotaenia praecoxis

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Dwarf Neon Rainbowfish

The Dwarf Neon Rainbowfish (Melanotaenia praecoxis) is a popular smaller rainbowfish with blue iridescence sides.  The male’s fins are red/orange in color making the fish standout in any aquarium.  They come from New Guinea, Indonesia. These are captive raised. They are perfect community fish with other similar fish.

They grow to the adult size of less than 3 inches.  They make a perfect addition to a 20-gallon tank or larger with like sized calm fish.  They enjoy being around live plants, so those are a plus. It is encouraged that they be kept in groups of 8 to 10 so they feel comfortable in their aquarium. In a group of males and females, the males will have brighter colors as they display to the rest of the group.

Please Note: All fish shipments have a 100% Live Arrival Guarantee when shipping with Overnight (1 Day) option. All other options void our Live Arrival Guarantee for fish. 

To replicate their natural habitat, the use of rock work, plants, and driftwood should be included in the aquarium. They also enjoy tannins in their water, so the use of Indian Almond or Guava leaves is highly recommended. They enjoy having a shaded aquarium so keeping floating plants is encouraged to cut down the light reaching them. We would not recommend keeping this fish with shrimp colonies due to the likeliness of the dwarf neon rainbowfish eating baby shrimp and potentially picking at adult shrimp.

The scientific name for the dwarf neon rainbowfish is: Melanotaenia praecoxis

They are omnivores by nature. We feed our dwarf neon rainbowfish a mix of frozen foods including daphnia, baby brine, cyclops, and bloodworms.

Our Tank Parameters

  • Ph: 7.2 to 7.8
  • Gh: 6 to 12
  • Kh:  2 to 6
  • TDS: 120 to 200
  • Temp: 72 to 86

Tank Recommendations

  • Leaves: Indian Almond or Guava
  • Wood: Mopani or Malaysian
  • Cones: Alder Cones
  • Other: Buffered substrate to lower pH, not required
  • 5 stars: 26 (96%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 1 (4%)
  • 1 star: 0 (0%)
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Anonymous
Dwarf neon rainbowfish

I got 4 of these guys, 1 male,3 female. They are all healthy and beautiful. They are getting along with my other fish ( 7 spotted rainbowfish and 4 female bettas).

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Daniel Wright
Incredible

They are doing incredible very happy with all their new cardinal tetra's and pygmy Cory friend's and all the plants
Sorry the glass isn't clean

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Bobby Henigsmith
Neon Dwarf Rainbow fish

Healthy, vibrant, very satisfied with the fish I received. I got 3 males, 3 females. My original order was for 5 fish but I received and extra. All fish are healthy and well!

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Donald Konitsky
Healthy fish

If you are on the fence about buying these, get off that fence and buy them. Came in fast, healthy, and active. Zero losses and still doing great a week later. Good mix of male and female which is what I wanted. Wish you guys sold some larger Rainbowfish species. Maybe in the future, but for now, if you are looking for Preacox Rainbowfish these won't disappoint.

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Anthony Boyers
Great fish in great condition

I’ve had the fish for a little over two weeks now and they’re all thriving in my community 20 gallon tank. The overnight shipping was expensive but definitely worth it. I also bought 3 peacock gugeons and they’re absolutely beautiful fish. Also understand that when you first get the fish they tend to be a little pale but this is only because of the stress of shipping and that after a week or so their color will return (given your water parameters are sufficient and other contributing factors) and the fish will look extremely vibrant. Thanks flip aquatics!

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Lynn Klaus
My new neon rainbow fish

I am enjoying my new neon rainbow fish they fit right into my community tank! They don’t know the meaning of the stay in middle during feeding they have found the sinking pellets my loach eat delicious lol. She teaches them boundaries

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Ryan

Beautiful fish and veryhealthy.

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Anonymous
Healthy Rainbowfish

Fish were on the smaller side, but all were healthy and adapted well to my tank

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Ronald Vigue

Neon Dwarf Rainbowfish | Melanotaenia praecoxis

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PAUL CHIARELLO
Dwarf Neon Rainbowfish

Beautiful fish, purchased to enlarge my current school. Excellent condition and lively. Currently 1/2 way through Quarantine.

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Tracy Pitt
A new favorite!

Beautiful busy little fish! They came in healthy and colored right up.

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Kory Duncan
Great little fish

All arrived very healthy and active. This is my first foray into rainbow fish and the colors they show can’t really be appreciated until you see them in person. Once these ones get settled in I’ll probably order some more.

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Amber

Healthy when arrived! Love love these guys, please add to your tank! They are a great community fish

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diana berberich
Aquatic gardner and hobbyest for 65 yrs

my dwarf rainbow are very healthy and lively and add a lovely hint of sparkling blue and turquoise as they chase thru the plants. I would order them again based on the specimens I received from you.

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Shua Lor Lor
First time buyer

I received 6 (bought 5) and they are all thriving well after a few weeks with color. I'm very pleased and would love to purchase these again in the future from flip aquatics.

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Elisabeth Herbert

Neon Dwarf Rainbowfish

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Thomas Fryar

Only I fish on whole order survived!very disappointed with the quality and size sent!

Hi Thomas!

We are so sorry to hear you had some losses! We hate to see this happen! Please email us at shipping@flipaquatics.com to submit a claim for your order so we can help you!

Amanda

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Deanna Ferguson
Happy happy fish

This was my third order from flip and it was another win. All seven (I ordered 6) arrived happy and healthy. Unpacking them is the best unboxing ever!

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Kasi Meter
Quality as always

I have purchased from Flips several times. Each and every time they arrive alive and healthy as can be. These dwarf rainbows are no exception. Even if they aren't insanely fancy or rare, they are beautiful energetic fish. Thank you so much.

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Alex Gritton
3 Healthy fish

I purchased 3 of these and they arrived alive and well. It’s been a couple of weeks and they are still doing great.

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Michael Nedoshytko
Fantastic Service! 10/10 Recommend!

Absolutely fantastic service. The fish came in excellent condition and Flip Aquatics honored my requests for the sex of the fish. Will definitely recommend to others and buy from Flip again!

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Tony Sims

Neon Dwarf Rainbowfish

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Vince Schumaker
They all “arrived alive”. Great experience.

Great experience, I will be ordering again.

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Dave Geschwind

Fish were received in excellent health. Are still doing great. Starting to color up with blue and orange fins. Will definitely order from Flip Aquatics again

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Thomas Zabriskie

great fish wish they where a little bigger . but i love them

Hey Thomas!

Thanks so much for your order and for your email I'm sorry that the fish weren't the size you were expecting. If there is anything that we can do to help, please let me know at store@flipaquatics.com. We are always happy to help. Have a wonderful day!

Tyler

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Richard Payne
Dwarf rainbows

They arrived alive and all are well, thx.

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Anthony J Mix
Dwarf rainbow fish

All of them arrived alive and healthy and look good