“…Altering the properties of the egested faeces may enable an easier and more complete removal of the faecal pellet from the water. Earlier studies on digestibility of ingredients in striped catfish (Da, Lundh, & Lindberg, ; Hien, Phuong, Le TU, & Glencross, ) focused on nutrient uptake and not on faecal waste aspects. Studies in trout (Brinker, , ; Brinker, Koppe, & Rösch, ) and Nile tilapia (Amirkolaie, El‐Shafai, Eding, Schrama, & Verreth, ; Amirkolaie, Verreth, & Schrama, ; Schneider et al., ) demonstrated that both the characteristics of the faecal pellet (e.g., the stability and removal efficiency from the water) and the amount of faeces produced were affected by the dietary composition.…”