“…Bengtson, Lydon & Ainley ; Ryan, Smith, Collins & Turchini ; Andrade, Nascimento, Conceição, Linares, Lacuisse & Dinis ). Most recently, for a variety of freshwater and marine species, work has focused on age at start of weaning (Parma, Bonaldo, Massi, Yúfera, Martínez‐Rodríguez & Gatta ; Mata‐Sotres, Lazo & Baron‐Sevilla ), digestive enzyme activity (usually also a function of age) (Muguet, Lazo, Conklin & Piedrahita ; Palińska‐Żarska, Żarski, Krejszeff, Nowosad, Biłas, Trejchel, Brylewski, Targońska & Kucharczyk ), diet types (Hauville, Zambonino‐Infante, Bell, Migaud & Main ; Pantazis, Benekos & Papadomichelakis ), abrupt vs. phased transition (Colburn, Walker & Berlinsky ; Liu, Zhu, Lei, Yang, Han, Jin & Xie ), fish size and stocking density (Policar, Stejskal, Kristan, Podhorek, Svinger & Blaha ), and photoperiod and ration (Wocher, Harsányi & Schwarz ). Clearly, weaning success is a function of many factors (Trabelsi, Gardeur, Teletchea & Fontaine ).…”