This video from Spain is about egg laying by Spondyliosoma cantharus, black seabream.
Translated from Ecomare museum on Texel island in the Netherlands:
25 October 2015
On Wednesday, September 23 Gerrit de Vries of the shrimper UQ21 caught on the Wadden Sea a small remarkable fish. Because he long ago already had caught two individuals he knew it was a black seabream. Catching a black seabream happens only very occasionally in the Wadden Sea.
The black seabream of de Vries was about 10 cm long. So it’s a youngster, because adult specimens can grow to 60 cm long. Black seabream like to be in seagrass beds or over rocky bottoms. They eat all kinds of things, from seaweed to shrimp and crabs. They are warm-water fish: in water that is colder than 7 degrees you will not see them.
Pingback: New tunnel for saving 350,000,000 migratory fish | Dear Kitty. Some blog