Nocturnal Feeding
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<fishfyi-glossary slug="nocturnal-feeding"></fishfyi-glossary>Définition
The habit of feeding primarily during nighttime hours, exhibited by species like catfish, eels, and many reef predators that rely on enhanced senses other than vision.
Explication détaillée
Nocturnal fish compensate for darkness with enhanced chemosensory (olfaction, taste via barbels), mechanosensory (lateral line), and electroreceptive abilities. Many nocturnal reef fish have large eyes with high rod density for dim-light vision. Temporal partitioning of feeding activity between diurnal and nocturnal species reduces direct competition on coral reefs — squirrelfish and soldierfish dominate at night while wrasses and damselfish rest. Behavioral adaptations include shelter-seeking during daylight, characteristic dawn-dusk activity surges, and reliance on substrate-associated prey like invertebrates that are themselves more active at night.