Strongly electric marine fish give low voltage, high current electric discharges. In salt water, a small voltage can drive a large current limited by the internal resistance of the electric organ. Hence, the electric organ consists of many electrocytes in parallel. Freshwater fish have high voltage, low current discharges. See more An electric fish is any fish that can generate electric fields. Most electric fish are also electroreceptive, meaning that they can sense electric fields. The only exception is the stargazer family. Electric fish, although a small minority, … See more Weakly electric fish generate a discharge that is typically less than one volt. These are too weak to stun prey and instead are used for navigation, electrolocation in conjunction with electroreceptors in their skin, and electrocommunication with other electric fish. The … See more Weakly electric fish can communicate by modulating the electrical waveform they generate. They may use this to attract mates and in territorial displays. Sexual behaviour See more • Feature detection (nervous system) See more All fish, indeed all vertebrates, use electrical signals in their nerves and muscles. Cartilaginous fishes and some other basal groups use passive electrolocation with sensors that detect electric fields; the platypus and echidna have separately evolved this ability. … See more Strongly electric fish, namely the electric eels, the electric catfishes, the electric rays, and the stargazers, have an electric organ discharge powerful enough to stun prey or be used See more Anatomy Electric organs vary widely among electric fish groups. They evolved from excitable, electrically-active tissues that make use of action potentials for their function: most derive from muscle tissue, but in some groups the organ … See more Web18 hours ago · "Fish have important functions on coral reefs, yet very little is known about how fish feces impact coral health." ... [In nature] feces may more frequently get broken up by waves or water current ...

A scientific basis for fish mass mortality and jellyfish beach ...

WebApr 11, 2024 · Australia’s list of critically endangered fish has doubled in what conservationists say is a sign of the urgent need to tackle the problem of invasive freshwater species. Web2 days ago · The state health department says ingesting even small amounts of mercury, PFOS or PFAS has been linked to thyroid hormone imbalance, neurological effects, cancer among other illness and disease. how do i crop a picture into a circle

Fish in Tanks? No, Thanks! PETA

WebAug 4, 2024 · Dead fish, ruined vacations, and other consequences of Florida’s red tide can be tied to just one tiny species: Karenia brevis. It’s a type of marine algae, or phytoplankton, native to the Gulf... WebJan 1, 2024 · This list of aggressive freshwater fish will help you see what options are out there, and settle on a species that interests you. 1. Tiger Barb Tiger barbs have a reputation for being mildly aggressive fish. They have a penchant for nipping at flowing fins and bullying more passive species. WebSome fish, such as catfish and sharks, have organs that detect weak electric potentials on the order of millivolts. Other fish, like the South American electric fishes Gymnotiformes , … how do i crop a gif