“…Ornamental fish farming is an economically profitable activity as well as one of the most popular hobbies in the world (Villar‐Martínez, Orbe‐Rogel, Vanegas‐Espinoza, Quintero‐Gutiérrez, & Lara‐Flores, ). Over the last 10 years, studies have sought to improve the profitability of the activity by improving the productive performance and intensifying the skin pigmentation through the manipulation of ornamental fish nutrition (Baron, Davies, Alexander, Snellgrove, & Sloman, ; Boonyapakdee, Pootangon, Laudadio, & Tufarelli, ; Dananjaya, Munasinghe, Ariyaratne, Lee, & De Zoysa, ; Fries et al, ; Jebaraja, Sivakumar, & Kumaraguruvasagem, ; Sinha & Asimi, ). Among the ornamental fish species of economic interest is the goldfish, which holds recognition worldwide in the ornamental fish industry for its beauty and attractive colours (Paripatananont, Tangtrongpairoj, Sailasuta, & Chansue, ; Sinha & Asimi, ).…”