Crested geckos readily eat a variety of fruits and insects. When feeding insects to your geckos, is important to offer appropriate sized feeder insects.  You can feed crickets (Acheta domestica) or feeder Roaches. Crested geckos also do not masticate insect preys. As a general rule, feeder insects should not be bigger than the distance between the eyes.  The geckos are quite capable of ingesting a larger pray, but this usually results in regurgitation.

Crickets should be regularly fed.  However, to ensure that the gecko eats the crested gecko diet.  The Crickets can be fed the crested gecko diet 20 to 30 minutes before offering them to the crested geckos. To keep your Crickets healthy their regular diet should contain at least different kind of grains such as oat, crushed rice, crushed corn, soybeans, barley, wheat bran and germinate to compose the dry part of the gutload ingredients. Most grocery stores sell powdered cereal or baby cereal made with various grains.

The wet part of the gutload ingredients should be chosen based on high calcium contents. This is also the feeders' source of water. Deep green leafy vegetables such as collard green, mustard green, texas green and turnip green are good choicesin small quantities. Yellow and orange vegetables such as carrots and yellow squash should be offer as well. Different fruits such as sliced apples, peaches, orangesand cantaloupe can be offered interminglingly.
A feeder insect should easily fit in a CG's mouth.  offer 6-10 appropriate sized insects per feeding for each CG at night. Excessive insects can stress crested geckos make sure to take out the uneaten Crickets.

Aside from live prey items, crested geckos readily eat mashed fruits such as peaches, apples, bananas, pears, apricots.  Do not feed Citrus to your gecko it could potentially kill it.  The Crested Gecko diet can be mixed into the mashed fruits before offering to crested geckos. Commercial baby food brands such as Gerber ¨ and Beech-Nut ¨ are readily available in baby food section of a local supermarket and can be used as well.

Use a small inverted plastic lid to place half to one teaspoon of mashed fruit per gecko.Uneaten portions should be removed the following morning to avoid mold growth.

The Crested Gecko Diet should compose 50-75% of the diet and live insects can compose the other 25-50%.

Based on fecal analysis, crested geckos in the wild mostly consume fruits (Henkel, 2000).

Adult crested geckos should be fed 3 to 4 times a week. Hatchlings and juveniles should be fed 4 to 5 times a week for optimal growth.

Although crested geckos accept various fruits, peaches are more readily eaten in my experience.