Characterization of the different behaviours exhibited by juvenile flathead grey mullet (Mugil cephalus Linnaeus, 1758) under rearing conditions

Aim of study: To describe the common behaviour flathead grey mullet (Mugil cephalus) under rearing conditions.
 Area Tepic, Mexico.
 Material and methods: Behaviours exhibited by mullets were videorecorded with submersible cameras installed inside three tanks. A total 690 min per day (07:30 - 18:30 h) recorded tank during a week. Afterwards, different behaviours juvenile M. cephalus described, identified characterized in an ethogram grouped into two categories: a) locomotion, including observed (resting, swimming fast swimming) b) feeding, (surface bottom feeding rubbing). Each behavioural variables quantified.
 Main results: is species constant locomotion associated to since fish showed continuous movement most light period. On contrary, reduced dark periods. Mullets be non-aggressive conditions present study, absence dominance aggression towards conspecifics was observed, which suggested high predisposition for adaptation captivity. Finally, frequencies juveniles similar among tanks analysed (p>0.05) except variable (p=0.02).
 Research highlights: Results from this study could interest aquaculture industry optimize techniques welfare production mullet.