JBL ProNovo Color Flakes M is ar colour food flakes for vibrant colours in all aquarium fish from 8-20 cm length. Fish show their colours with almost any food, but their colouring can be intensified by certain types of food, just like in humans with a diet of carrots. Mating or fighting males show how intense the colours can be in fish. JBL does not use cheap carotene, however, but natural astaxanthin (also a carotene) obtained from krill shrimp and spirulina algae. This is considerably more expensive, but it is a natural way to promote the beautiful colours of the fish.JBL ProNovo Color Flakes M+ strong colour formation in aquarium fish due to high-quality, natural astaxanthin (a carotene) from krill shrimps+ prebiotic aquarium fish food: dedicated dietary fibres in the food supply the beneficial intestinal bacteria with food for a healthy digestion+ natural raw ingredients without artificial additives for a natural diet and healthy aquarium fish+ tested on JBL research expeditions in