Damon Mcknight
Electric eels, which are not actually true eels, are native to South America and are found in the Amazon, particularly in Suriname's Coppename River. They are known for their ability to generate electricity and stun prey with shocks of up to 860 volts. While there are some land animals that can detect electricity in Australia, such as the platypus and the echidna, there is no evidence to suggest that electric eels are found in Australia.
| Characteristics | Values |
|---|---|
| Are electric eels found in Australia? | No, they are native to South America. |
| Types of electric eels | E. electricus, E. voltai, and E. varii. |
| Habitat | Rivers of Suriname, the highlands of the Amazon, and lowland waters. |
| Features | Brown wrinkly skin and frowny mouths. |
| Size | Up to 8 feet long. |
| Electric shock | Up to 860 volts. |
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What You'll Learn
Electric eels are not found in Australia
Electric eels, the electroreceptive knifefish of the genus Electrophorus, are not found in Australia. They are neotropical freshwater fish native to the rivers and highlands of South America, specifically the Amazon basin.
The three species of electric eel are E. electricus, E. voltai, and E. varii. They were previously believed to be a single species, but in 2019, researchers identified genetic differences that distinguished them as separate species. E. electricus is found in the highlands of the Guiana Shield, while E. voltai inhabits the highlands of the Brazilian Shield. The third species, E. varii, prefers the murky lowland waters.
These electric eels are known for their ability to generate powerful electric shocks of up to 860 volts, which they use to stun prey and for self-defense. They are not closely related to true eels (Anguilliformes) but are more closely related to catfish.
While electric eels are not found in Australia, it is worth noting that Australia is home to the platypus and the echidna, which are land animals capable of detecting electricity.
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They are native to the Amazon
Electric eels are native to the Amazon. They are a genus of neotropical freshwater fish from South America in the family Gymnotidae. In 2019, scientists discovered two new species of electric eels, bringing the total number of known species to three. These are Electrophorus electricus, Electrophorus voltai, and Electrophorus varii.
E. electricus and E. voltai are found in the highlands of the Amazon, with the former in the Guiana Shield and the latter in the Brazilian Shield. E. varii, on the other hand, prefers the murky lowland waters. The eels may have diverged from each other after being separated by the development of a major Amazon floodplain over three million years ago.
The three species of electric eels can be distinguished by subtle differences in skull shape and body structure. For example, E. electricus and E. voltai have depressed skulls, which may be an adaptation for finding food or for efficient swimming in fast-flowing currents. E. voltai is also larger than the other two species, growing up to 8 feet in length.
The discovery of these new species highlights the importance of protecting and studying the Amazon rainforest, as it suggests that many other animals capable of generating electricity remain undiscovered. Furthermore, the unique electrical capabilities of electric eels have inspired biomedical applications in humans, such as the development of artificial electrocytes for medical implants.
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They are not closely related to true eels
Electric eels are not closely related to true eels. Despite their name, electric eels are a type of knifefish, belonging to the order Gymnotiformes, which also includes carp and catfish. They are only distantly related to true eels, which belong to the order Anguilliformes.
The electric eel was first described by Swedish scientist Carl Linnaeus in 1766, based on early field research conducted in South America. Linnaeus named the species Gymnotus electricus, placing it in the same genus as the banded knifefish, Gymnotus carapo. In 1864, Theodore Gill reclassified the electric eel as Electrophorus electricus, giving it its own genus.
The distinction between electric eels and true eels is important because they have different evolutionary histories and are adapted to different environments. True eels are elongated finned-fish that belong to the order Anguilliformes, with over 800 species ranging in size from 5 cm to 4 m in length. They are mostly found in saltwater environments, with some species travelling between saltwater and freshwater environments to breed.
In contrast, electric eels are neotropical freshwater fish from South America. They are known for their ability to stun prey by generating electricity, delivering shocks of up to 860 volts. Electric eels are nocturnal, air-breathing animals with poor vision, relying on electrolocation to navigate and hunt. They grow continuously throughout their lives, adding more vertebrae to their spinal column, and can reach lengths of up to 2.75 m and weights of up to 22.7 kg.
The discovery of new species of electric eels in recent years highlights the hidden diversity of organisms in the Amazon rainforest and the need to protect these biodiversity hotspots.
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They can produce up to 860 volts of electricity
Electric eels are a genus of neotropical freshwater fish from South America. They are known for their ability to stun their prey by generating electricity, delivering shocks of up to 860 volts. This makes them the most powerful electricity-generating animals in the world.
The electric eel, or Electrophorus electricus, was first described by Swedish scientist Carl Linnaeus in 1766. Linnaeus's research was based on early field studies conducted by Europeans in South America, as well as specimens sent back to Europe for further examination. He noted that the fish caused painful shocks and had small pits around its head. In 1864, Theodore Gill reclassified the electric eel as its own genus, Electrophorus, derived from the Greek words "ḗlektron" (amber, a substance that can hold static electricity) and "phérō" (I carry), thus giving the meaning "electricity bearer".
In 2019, C. David de Santana and colleagues divided E. electricus into three species: E. electricus, E. voltai, and E. varii. De Santana and his team collected 107 electric eel specimens from across the Amazon basin over six years, discovering genetic differences that indicated the presence of three distinct species. These species are E. electricus, found in the highlands of the Guiana Shield; E. voltai, native to the highlands of the Brazilian Shield; and E. varii, which inhabits the murky lowland waters.
The electrical capabilities of electric eels have long been recognised, with early studies dating back to 1775. These early investigations contributed to the development of the electric battery in 1800. Electric eels possess a large number of electrocytes, which are special cells that enable them to generate powerful electric shocks. By understanding the function of these electrocytes, scientists have gained valuable insights into voltage-gated sodium channels, which play a crucial role in triggering muscle contractions in many species.
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They were first studied in 1775
Electric eels, or Electrophorus electricus, are neotropical freshwater fish from South America. They are known for their ability to stun prey by generating electricity, delivering shocks of up to 860 volts.
The first written mention of the electric eel was in records by the Jesuit priest Fernão Cardim in 1583, who referred to it as "puraké", meaning "the one that numbs" in Tupi. However, it was first formally studied in 1775, when it was dissected by the surgeon and anatomist John Hunter, who informed the Royal Society that:
> "Gymnotus Electricus [...] appears very much like an eel [...] but it has none of the specific properties of that fish."
Hunter observed that there were "two pair of these [electric] organs, a larger [the main organ] and a smaller [Hunter's organ]; one being placed on each side", and that they occupied "perhaps [...] more than one-third of the whole animal [by volume]". He also noted that the electric eel increased the power of its shocks by coiling around its prey.
Also in 1775, the American physician and politician Hugh Williamson, who had studied under Hunter, presented a paper titled "Experiments and Observations on the Gymnotus Electricus, or Electric Eel" to the Royal Society. In it, he reported a series of experiments studying the electric capabilities of the eel, including the following:
> "In order to discover whether the eel killed those fish by an emission of the same [electrical] fluid with which he affected my hand when I had touched him, I put my hand into the water, at some distance from the eel; another cat-fish was thrown into the water; the eel swam up to it... [and] gave it a shock, by which it instantly turned up its belly, and continued motionless; at that very instant I felt such a sensation in the joints of my fingers as in experiment 4."
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Frequently asked questions
No, electric eels are native to the rivers of South America.
Electric eels are a genus of neotropical freshwater fish known for their ability to stun prey by generating electricity. They can deliver shocks of up to 860 volts.
Yes, 250 species of fish in South America can generate electricity, although most are only weakly electric. Sharks and catfish are examples of species that can detect electricity but cannot generate it.
