Non-migratory
Pelagic
Some species migrate from freshwater to the ocean for feeding and return to freshwater to spawn
Mating occurs in freshwater rivers
Migrate from freshwater to saltwater
Spawn in freshwater, migrate to the ocean
Unknown
The migration pattern of Beardfish is not well understood.
During the reproductive period, the male Beardfish develop a unique filamentous extension on their chin, which is believed to play a role in attracting females.
Long-distance migrations to spawn
Mature individuals migrate to spawning grounds
Females scatter eggs, males fertilize the eggs externally
Bubble nest builders
No specific migration pattern
Male guards the eggs until they hatch
Bigeye fish are known to undertake vertical migrations, moving between deeper waters during the day and shallower waters at night.
During spawning, male Bigeye fish will court females by displaying their colors and performing swimming displays. The female will release eggs into the water, and the male will fertilize them.
May migrate upstream for spawning
Semelparous
Some populations undergo short migrations
Spawning in shallow, flowing water during spring or early summer
No definite migration pattern
Spawning in large groups
Varies by species
Spawning
Not migratory
Female lays eggs inside freshwater mussels