Why Is My Guppy Fish Staying Hidden?

Guppy fish are colorful and active fish. They are pleasant to look at and can sometimes be calming. So, you might be asking yourself, “why is my guppy hiding?” A guppy staying hidden can be for many different reasons. Here are the most common ones:

Pregnant Guppy

When female guppies are ready to give birth, they usually look for places to hide. Inspect the guppy that is hiding and see if it has an extended stomach or V-shaped belly. The gravid spot will also be darker than usual. With no cover in the tank, like live plants, for the female to hide, it will lie down at the bottom of the tank.

Sleeping Guppy

If your guppies hide to the bottom of the tank during the night, then they are more than likely sleeping. They don’t do this during the day, so sickness is likely the cause.

Sick Guppy

Guppies suffering from various diseases or parasitic infestations often hide at the bottom of the tank or in the corner. Usually, signs of sickness include loss of appetite and less activity. Other symptoms of illness are cuts, spots, damaged fins, scoliosis, swollen eyes, or dropsy.

Stressed Guppy

It’s easy to tell if your guppies are stressed. Aggressive tank mates, poor water parameters, or more males than females in the tank. Take your pick, all these things cause stress.

Aggressive Tank Mates

Guppies are not aggressive fish. So, do not keep aggressive fish in the same tank as guppies. Guppy fish are schooling fish and will group when threatened in the wild. But, without the numbers to do so in a tank setting, they may hide instead. To prevent this behavior, choose compatible tank mates for your fish.

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Poor Water Parameters

Proper guppy water parameters include achieving the keeping the TDS level low, setting the ideal pH level, and keeping the aquarium clean. When the water in the tank is of poor quality, the fish become less active and sink to the bottom of the aquarium. Always change at least 50% of the water bi-weekly to reduce ammonia levels and to clear out toxins and debris.

More Males Than Females

Having more males than females in a guppy tank can cause problems. The males will pursue the females and try to mate all the time.

Constant harassment by males can stress out the female, and it will try to hide. Mating too often also reduces the lifespan of guppies and may slow their growth. Try to keep three females to one male per tank, also keeping in mind the 1 inch of fish per 1 gallon of water rule.

Having more females than males in the tank can also help keep the guppy population under control. Here’s how to tell the difference between male and female guppy fish.