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Demersal zone – the zone at or near the bottom of a sea or lake. Inhabitants of the demersal zone feed off the bottom or off other demersal fish. See also pelagic zone. Demersal fish – fish that live in the demersal zone. Examples are cod, flounder and snapper. Compared to pelagic fish, demersal fish contain little oil. See also bottom feeder.
The bacterial symbionts are not found at consistent levels throughout stages of anglerfish development or throughout the different depths of the ocean. [22] Sequencing of larval organisms of the Ceratioidei suborder show an absence of bacterial symbionts, while sequencing of adult anglerfish showed higher levels of bioluminescent bacterial ...
The Atlantic Halibut is a batch spawner where females lay anywhere from a few thousand to four million eggs (depending on the size and age of the fish, older females tend to lay only two million in one spawning period [citation needed]). Spawning occurs between December and April near the bottom of the ocean between 5 and 7 °C (41 and 45 °F).
In 2005, Zaitsev described the SML and associated near-surface layer (down to 5 cm) as an incubator or nursery for eggs and larvae for a wide range of aquatic organisms. [ 37 ] [ 69 ] Hunter's definition includes all interlinked layers from the laminar layer to the nursery without explicit reference to defined depths. [ 79 ]
Six small non-avian dinosaur eggs, no bigger than grapes, were discovered during a field study in Ganzhou, China, in 2021. These eggs now mark the smallest-ever found in the world.
The creatures were found in “absolutely lightless” areas of forest caves, researchers said. ‘Giant’ cave-dwelling creature — carrying 6 eggs — found in Ecuador. It’s a new species
Adult fish also prey on fish eggs and larvae. For example, haddock were observed satiating themselves with herring eggs back in 1922. [14] Another study found cod in a herring spawning area with 20,000 herring eggs in their stomachs, and concluded that they could prey on half of the total egg production. [17] Fish also cannibalise their own eggs.
This nest was 111 eggs. YouTube screengrab Brandon Rahe , a contractor with the FWC’s Python Action Team, needed a boat to reach the nest, which was well hidden in a hallow of dead grass and weeds .