Produced specially for more advanced fishkeepers who want to feed the very best diet to their fish tetrapro is produced using an updated process that allows the introduction of a specific benefit into the middle of each crispr the resulting lsquotwo colourrsquo crisps allow the delivery of visible benefits to fish in a complete dietr there are three foods in the tetrapro range each providing a complete daily diet for tropical fish but with different specific benefitsr any one of the