Some fish like eating vegetable, is this true?

Correct. Even the more omnivore cichlids will eat some veggies. The key here is to present and prepare the vegetable the right way. Spinach or salad leaves need to be blanched before being placed in your tank. Blanching consist of rinsing under hot water. This process will break the cell walls to allow better digestion. Our Seaweed range offers you versatility and variety all in one. To avoid algae or spinach leaves clogging up filters or overflow pipes we strongly recommend using our seaweed or grid feeding clips. ‘Vegetarian’ fish will graze all day and will feed whenever they want.