Crickets are insects belonging to the family Gryllidae, recognized by their chirping songs. They are classified as omnivores, consuming both plant and animal matter, and are highly opportunistic feeders. This adaptability allows them to thrive in diverse ecosystems, from open fields to residential areas. Their diet ranges from decomposing organic material in the wild to specialized grains and produce in controlled settings.
The Cricket’s Natural Diet
In their native habitats, crickets play a significant role as decomposers, recycling nutrients back into the soil. Their diet frequently consists of decaying organic matter, such as dead leaves, rotting wood, and fungi, which they scavenge from the environment.
Beyond scavenging, crickets consume a variety of living plant material. They graze on tender plant shoots, grasses, flowers, seeds, and fallen fruits. This plant-based consumption is often supplemented with protein from small, slow-moving insects like aphids or insect larvae.
When food becomes scarce, crickets exhibit predatory or scavenging behavior toward other insects, including cannibalism. They also consume dead animal matter or injured invertebrates they encounter. This flexible, protein-seeking diet ensures their survival.
Feeding Crickets in Captivity
When crickets are housed domestically, often as feeder insects for reptiles or other pets, their diet must be carefully managed to ensure their health and nutritional value. Commercial cricket chow, which is specially formulated, provides a balanced mix of proteins, carbohydrates, and fats. This dry feed is a common staple in captive environments.
A variety of human-grade foods can also be offered, including dry grains like uncooked oatmeal, cornmeal, or wheat germ, served in shallow dishes. Fresh produce is a necessary addition to their diet, providing both nutrients and moisture. It is important to remove uneaten fresh food within 24 hours to prevent mold growth, which can harm the colony.
Fresh Produce Options
- Leafy greens
- Carrots
- Apples
- Potatoes
To prevent the crickets from becoming malnourished or aggressive, they must have constant access to food. Dry dog or cat food and fish flakes are sometimes used to provide a boost of animal protein, but highly acidic or sugary produce should be avoided. Maintaining a consistent food supply mitigates the risk of cannibalism, which increases dramatically in dense populations.
Nutritional Requirements and Water Sources
Crickets require a diet rich in specific nutrients to support their rapid growth and to make them a healthy food source for other animals. Protein is particularly important for building tissue and fueling reproductive processes; crickets are naturally high in protein, often containing all nine essential amino acids. Calcium is also a concern when crickets are used as feeders. They are often “gut-loaded” with calcium-rich foods, a practice that transfers beneficial nutrients to the consumer just before the crickets are fed to a pet.
For hydration, crickets must be given water in a way that prevents accidental drowning, as they are poor swimmers. A common and safe method is using specialized water gel crystals or hydration cubes, which hold water in a solid form. Alternatively, a damp, clean sponge or cotton ball placed in a shallow dish allows them to drink safely from the surface tension. High-moisture vegetables, such as slices of carrot or apple, can also serve as a dual source of hydration and nutrition.