- 1 Which species of fish born in freshwater spends most of its life in the sea and returns to freshwater to spawn?
- 2 Which fish migrates from saltwater to freshwater?
- 3 What 3 fish migrate to freshwater to breed?
- 4 Which species of fish migrate to lay eggs?
- 5 What does Diadromous mean?
- 6 What is Oceanodromous?
- 7 Which is the most poisonous fish in the world?
- 8 Is a shark a Stenohaline?
- 9 Which fish has the longest migration route?
- 10 What is fish parental care?
- 11 What is a salmon’s life cycle?
- 12 What is Potamodromous fish?
- 13 How do eels reproduce?
- 14 Which is a catadromous fish?
- 15 Which fish create current?
Which species of fish born in freshwater spends most of its life in the sea and returns to freshwater to spawn?
Diadromous fishes migrate between freshwater and saltwater. Anadromous fishes, including many salmonids, lampreys, shad, and sturgeon, spend most of their lives in the sea and migrate to freshwater to reproduce.
Which fish migrates from saltwater to freshwater?
Anadromous fish live in the sea and migrate to fresh water to breed. Their adaptations to conditions of different habitats are precise, particularly with regard to salinity of the water.
What 3 fish migrate to freshwater to breed?
Salmon and striped bass are well-known anadromous fish, and freshwater eels are catadromous fish that make large migrations.
Which species of fish migrate to lay eggs?
Salmon, Hisla, Lamprey etc.
- Salmon migrate for breeding during winter from sea to river.
- – stops feeding during journey.
- – changes colour from silver to dull reddish brown.
- – gonads mature.
- They select suitable spawning ground and make a saucer-like nest in which female lays eggs and male releases smelt over them.
What does Diadromous mean?
Diadromous is a general category describing fish that spend portions of their life cycles partially in fresh water and partially in salt water. Catadromous is a term used for a special category of marine fishes who spend most of their adult lives in fresh water, but must return to the sea to spawn.
What is Oceanodromous?
An oceanodromous fish, like an anadromous or catadromous fish, is a migratory fish. Unlike anadromous or catadromous fish, an oceanodromous fish spends its whole life in salt water. Many oceanodromous fishes are termed highly migratory species (HMS) because of their ocean basin-sized migration routes.
Which is the most poisonous fish in the world?
Puffer fish are the most poisonous fish in the world.
Is a shark a Stenohaline?
shark is stenohaline or euryhaline. Remarkably, some fishes are capable of life in both freshwater and seawater. Stenohaline describes an organism, usually fish, that cannot tolerate a wide fluctuation in the salinity of water. Stenohaline organisms can tolerate only a relatively-narrow range of salinity.
Which fish has the longest migration route?
New York February 6, 2017 – An international team of scientists has confirmed that the dorado catfish (Brachyplatystoma rousseauxii) of the Amazon River basin holds the record for the world’s longest exclusively freshwater fish migration, an epic life-cycle journey stretching nearly the entire width of the South
What is fish parental care?
Fish care ranges from hiding of eggs and then abandoning the area, to guarding young in elaborately prepared structures for up to several months, and from carrying young in or on the parent’s body cavity to the feeding of young.
What is a salmon’s life cycle?
As compared to a typical freshwater or marine fish, the life cycle of salmons is very interesting. It comprises six stages: egg, alevin, fry, parr, smolt, and adult. Salmon are anadromous, meaning they spend their entire life in the ocean, but migrate to rivers and streams to spawn.
What is Potamodromous fish?
A potamodromous fish, like an anadromous or catadromous fish, is a migratory fish. Unlike anadromous or catadromous fish, a potamodromous fish spends its whole life in fresh water. The endangered Colorado Pikeminnow migrates long distances only in fresh water.
How do eels reproduce?
Despite knowledge of their round trip migration, scientists still haven’t observed mating in the wild, or found a single eel egg. Leading theories suggest that eels reproduce in a flurry of external fertilization, in which clouds of sperm fertilize free-floating eggs.
Which is a catadromous fish?
Anadromous fishes, including many salmonids, lampreys, shad, and sturgeon, spend most of their lives in the sea and migrate to freshwater to reproduce. American and European eels are catadromous fishes, which spend most of their lives in freshwater and migrate to the sea to reproduce.
Which fish create current?
Electric eels (Electrophorus electricus) have three electric organs—the main organ, Hunter’s organ, and Sach’s organ—which are made up of modified muscle cells. Electric eels (Electrophorus electricus) are freshwater fish found in South America. They can discharge enough electricity to jolt a human being.