Can crested geckos eat banana

Yes, a crested gecko can be fed bananas but as a treat. Bananas contain a lot of natural sugars and can become very addicting to your gecko. Be sure that a fruit/smoothie mix is not a stable source of diet. Crested geckos should only be offered fruit and smoothies as a weekly/monthly treat. Smoothies should always be supplemented properly before being fed to the animals. MRP (meal replacement powder) is the readily available source of food for crested geckos.