Sentences with phrase «juvenile fish into»

A facility that releases juvenile fish into the wild for recreational fishing or to supplement a species» natural numbers is generally referred to as a fish hatchery.

Not exact matches

Environmental water delivery to the Great Darling Anabranch (from the Commonwealth and New South Wales Office of Environment and Heritage) commenced in mid-February 2017, aiming to support juvenile native fish (such as golden perch) to disperse from Lake Cawndilla into the Murray.

Juveniles lose the bright, plankton - filtering gills seen on this individual when they mature and descend into some of the deepest depths of any known fish, often more than 5,000 meters (16,000 feet) beneath the ocean surface.

But when trout density increases upstream, and fish move downstream into Grand Canyon, they can compete with native fishes for limited food resources, sometimes preying upon juveniles.

The juvenile crabs, shrimp and fish she is collecting spawned tens to hundreds of kilometres away on the continental shelf in April and May — just when the Deepwater Horizon well was spilling some 10 million litres of oil a day into the Gulf of Mexico.

To measure such effects, de Mutsert and research technician Elise Roché repeatedly cast a giant trawl net into the water at oiled sites, pulling in juvenile crustaceans and fish such as anchovies, catfish and menhaden.

Above all, the new insights into the juvenile fish under the ice are important because it's still impossible to say how polar cod populations will change in the face of climate change.

They usually don't harm the fish and simply fall off when they develop into juvenile mussels.

To follow the juvenile salmon, researchers implanted small electronic tags into the tiny 12 - centimetre fish as they were leaving Chilko Lake.

Using tags surgically implanted into thousands of juvenile salmon, UBC researchers have discovered that many fish die within the first few days of migration from their birthplace to the ocean.

Very small or juvenile fish should be fed flakes that have been crushed into smaller particles, or one of the diets made especially for fry.

These mangroves are nurseries for juveniles of many reef fishes; they also provide feeding grounds and introduce fixed nitrogen and organic detritus into the reef system.

For example, reductions in seasonal sea ice cover and higher surface temperatures may open up new habitat in polar regions for some important fish species, such as cod, herring, and pollock.128 However, continued presence of cold bottom - water temperatures on the Alaskan continental shelf could limit northward migration into the northern Bering Sea and Chukchi Sea off northwestern Alaska.129, 130 In addition, warming may cause reductions in the abundance of some species, such as pollock, in their current ranges in the Bering Sea131and reduce the health of juvenile sockeye salmon, potentially resulting in decreased overwinter survival.132 If ocean warming continues, it is unlikely that current fishing pressure on pollock can be sustained.133 Higher temperatures are also likely to increase the frequency of early Chinook salmon migrations, making management of the fishery by multiple user groups more challenging.134

«These juvenile fish on the outside look completely normal, but their hearts are not functioning properly and that translates directly into reduced swimming ability and reduced survival,» said John Incardona, a research toxicologist at NOAA Fisheries» Northwest Fisheries Science Center in Seattle.