Neon rainbowfish (Melanotaenia praecox) are relatively small fish, making them suitable for a variety of aquarium setups. The dwarf neon rainbowfish size reaches up to 5 cm (2.0 in) in length, but there are reports of individuals up to 8 cm (3.1 in). This measurement is from the snout to the tip of the tail fin. In terms of size, there is generally minimal difference between males and females. Both genders tend to grow to a similar length, with males occasionally having slightly longer and more elongated fins. If you plan to keep a larger group or want to include other fish species, it’s recommended to opt for a larger tank. Increasing the tank size to 30 gallons (113 liters) or more will allow for a greater number of neon rainbowfish and provide a more spacious environment for them to thrive.

Ideal aquarium conditions are a pH of 7 to 8 and temperatures ranging from 75 to 82 degrees. As omnivores, their diet is flexible, making them easy to care for. To keep and breed dwarf neon rainbowfish in a tank there is no need for special water preparation. The only thing that matters, is the tank water quality in terms of toxic nitrogen compounds content in it. Excessive amount of the latter is not lethal for the fish, but it is highly unwanted. Filtration For the aquarium lights, you need to carefully choose your options. Neon rainbowfish prefer darker environments. However, since their tank is densely vegetated, you can provide low, subdued light. pH level is essential for most tanks; that is even more true for tanks that house Dwarf Neon Rainbowfish. Dwarf Neon Rainbowfish cannot handle fluctuations in their pH, so it is imperative to monitor them closely and ensure it stays between 6.8 -7.5. Any change in pH levels usually indicates something wrong in your tank; if you catch it early, you can fix the problem so that it doesn’t worsen. Dwarf Neon Rainbowfish SizeDwarf Neon Rainbowfish are known to be a schooling species. That means you need to have several in the same tank to avoid them getting lonely and depressed. Once they’re in a school, Dwarf Neon Rainbowfish love to dart around their tanks and explore their surroundings. You’ll likely never be bored when you have a school of Dwarf Neon Rainbowfish. Because they are a schooling species, you’ll likely be able to get a better deal on them if you buy several at once. How many Dwarf Neon Rainbowfish should be kept together? The red neon rainbow fish will add a pop of color to your aquarium due to its vibrant neon red and blue coloration. Also, going by the name Melanotaenia praecox, the fish is native to Indonesia and Papua. There are fish kinds that are easy to keep as well as rare and demanding ones. As a rule, you can encounter undemanding and adapted species on sale. Newborn juveniles gather is large groups near the tank water surface, where the lighting is more intensive. The body of neon rainbowfish is long and it deepens with age. The adult male fish develop pinched faces with bigger eyes and twin dorsal fins than their cousins.

Always remember anything you add to your aquarium can bring diseases to your fish. Thus, before adding plants, substrate, decorations, and other fish, monitor them properly.

Male Dwarf Neon Rainbowfish can sometimes be aggressive toward one another. There is an easy way to prevent this. You need to ensure that your tank has more female Dwarf Neon Rainbowfish; if you do this, it should prevent the males from being aggressive towards one another. They tend to be aggressive toward one another during the breeding season, so if the females outnumber the males, there should be no reason for them to be aggressive. Can Dwarf Neon Rainbowfish Live Alone?

The native rivers of neon rainbowfish have a lot of plants to swim through and use as hiding spots if they are bullied by the larger, aggressive fish. Lighting: Neon rainbowfish benefit from moderate lighting levels. Choose a lighting system that provides a natural day-night cycle, with a period of darkness to mimic their natural environment.Since the dwarf neon rainbowfish males are much brighter and slimmer than the females, it is preferable to have more male species in a group. When making efforts to attract female, the males try to show the best of them. Their coloring becomes brighter and more saturated and their movements are fast and graceful. I also recommend placing a floating spawning mop so that the adult fish can lay their eggs on it. Also, It’s advisable to place a catch-up because hanging a catch cup on the inside of the tank keeps the water warm and you can keep the spawning mop inside the catch cup with an air stone to keep the water oxygenated.