How To Dramatically Increase Growth Rate Of Guppy Fry

Increase Growth Rate Of Guppy Fry

Guppies are peaceful aquarium fish with bright colors. They are hardy and can grow pretty well and fast if you maintain optimum conditions in the tank. Regardless of if you are keeping guppy for fun or profit, you should know how to make your fry grow faster and better.

If you want to make your guppy fry grow dramatically fast, you should consider raising them in a separate tank. Raising the fish in an independent tank will prevent stress from predators and bigger fishes. It will also allow you to provide them with enough water and space.

Guppy fry grows rather quickly if you optimize the tank conditions to suit them. They grow into a complete adult in about 2-3 months. Likewise, their feeding combination and feeding frequency can significantly affect how well and how fast guppy fry will grow.

General Tips On How To Dramatically Increase The Growth Rate Of Guppy Fry

Making your guppy fry grow dramatically faster is not rocket science; it is as easy as you can imagine. Making the fry grow significantly faster only requires some necessary steps and tips. Below are some basic techniques that can help your guppy fry achieve significant growth in a relatively short period.

Tank Requirements

  • Separate the guppy fry from adult guppies and raise them in a separate tank. [NOTE: the independent tank should not be breeding boxes]
  • Guppy fry should not stay in a community tank to avoid stress, competition for food, and other detrimental events.
  • If you have enough tank, you can further separate guppy fry by size and gender.
  • Optimize the tank of the guppy fry to suit them. Please provide them with enough space and water volume.
  • Make sure you carry out regular water and tank maintenance for guppy fry. Weekly water changes should be competent enough in keeping the tank in a clean condition.
  • Also, ensure that you carry out regular gravel vacuuming and filter maintenance.
  • Prevent diseases and parasites from invading the tank. In case diseases and parasites invade the tank, combat parasites and treat diseases as soon as you detect them.

Environmental Requirements

  • Employ the use of a water conditioner to get rid of excess chlorine and chloramine in the tank.
  • Ensure that you keep the water temperature of the fry tank in a stable region of 75-78°F [24-26°C]
  • Likewise, ensure that you maintain the pH level of the aquarium between the range of 6.8-7.8
  • Prevent strong water flow in the tank with the use of a sponge filter.
  • Add suitable live plants such as java moss and guppy grass to the tank. These plants will provide the guppy fry with shades and places to hide.
  • Guppy fry like lights in their tanks to enhance their bright colors. You can keep the artificial lights in the container on for 12-16 hours per day.
  • Feed guppy fry regularly with a high-quality diet and a wide variety of food. The quality food you provide for guppy fry has a very significant effect on the growth of guppy fry. You should ensure that the diet of fry contains protein, live foods, vegetables, flakes, and dry food in appropriate proportions.

Reasons Why Guppy Fry Don’t Grow As Fast As They Should

Some aquarists have complained several times about their guppy fry growing rather too slowly or not growing at all. If you find out that your guppy fry is growing too slowly or seem like they are not growing at all, it can be due to several reasons. These reasons include;


The genetic makeup of guppy fry can significantly affect how well your guppy fry will grow. Some guppies have specific genes that do not support fast growth or promote stunted growth. In this case, nothing much can be done. Optimizing all conditions to suit the fish might still not have a significant effect on their growth.

Lack of Space

Lack of space for guppy fry to move around freely can stunt their growth. Keeping guppy fry in a breeder box beyond two weeks is a common mistake breeders make that stunt the growth of guppy fry. Breeder boxes are usually too small to accommodate the growth of guppy fry beyond two weeks.

Too Much Space

Like when you have less space for guppy fry, too much space can also be detrimental to their growth. Guppy fry might find it challenging to find food due to high water volume effectively. Likewise, the guppy fry will expend too much energy in looking for food in ample space. If you provide them with the right amount of space, the energy would instead be channeled into their growth.

Lack of Water Changes and Poor Water Qualities

One cannot overemphasize the importance of water changes and good water quality to fish growth. Water changes are essential because it is an effective way to get rid of accumulating toxins and waste from the tank. Change about 15-20% of the tank water weekly is enough to keep the tank clean and free of toxins.

Improper Feeding

It is essential to feed guppy fry with high quality and variety of food. Feeding is one of the critical things that can influence how well or how poor guppy fry would grow. It is not enough to feed them with a large quantity of food; the quality of the food is equally important. Their food should contain live food, flakes, vegetables, proteins, as well as dry foods. Overall, you should ensure that their diet supplies them with enough minerals and vitamins that will ensure their proper growth while also protecting them from diseases and illnesses.


Guppies are one of the most natural aquarium fish to keep and maintain. You can easily influence the growth of guppy fry, particularly in the first six weeks of their life.

Enhancing the growth of guppy fry is not as difficult as most aquarists, particularly beginners perceive it to be. You can drastically increase the growth of your guppy fry by merely optimizing the water and tank conditions to suit them. You can also get this done effectively by raising them in a separate tank from the adult guppies.



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