Molly Ayala
Electric eels are fascinating creatures that can generate electricity and stun their prey with electric shocks of up to 860 volts. Despite their name, they are not true eels but belong to the knife fish family. Baby electric eels, also known as fries or fingerlings, are transparent and can produce electric discharges at a lower voltage than adults. They use their electric fields to navigate and find food. In this text, we will explore the life cycle of electric eels and learn more about their unique characteristics, including their ability to generate electricity from birth.
| Characteristics | Values |
|---|---|
| Name | Fry or fingerling |
| Electric discharge | Yes, but at a lower voltage than adult electric eels |
| Habitat | Primarily freshwater habitats in South America, particularly in the Amazon and Orinoco river basins |
| Diet | Fish |
| Behaviour | Nocturnal, obligate air-breathing animals |
| Size | Electric eels can grow up to 9 feet (2.75 meters) in length and weigh almost 50 pounds (22.7 kilograms) |
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What You'll Learn
- Baby electric eels are called fries or fingerlings
- They produce electricity, but at a lower voltage than adult eels
- Electric eels are not true eels, they are South American knifefish
- They are nocturnal and air-breathing, needing to surface every 10 minutes
- Baby eels are transparent and sometimes harvested for food
Baby electric eels are called fries or fingerlings
Electric eels are not true eels but are neotropical freshwater fish from South America, specifically the Amazon and Orinoco river basins. They are the only members of the subfamily Electrophorinae, within the family Gymnotidae. Electric eels are more closely related to carp and catfish.
Eels begin life as flat and transparent larvae, called leptocephali. They drift in the sea's surface waters, feeding on marine snow, or small particles that float in the water. Larval eels then metamorphose into glass eels and become elvers before finally seeking out their juvenile and adult habitats.
Baby eels, or glass eels, are sometimes harvested for food. As they grow, their ability to generate electricity becomes stronger, aiding in hunting and self-defence.
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They produce electricity, but at a lower voltage than adult eels
Baby electric eels are called fries or fingerlings. They are born tiny and transparent, and they are sometimes harvested for food. While they are called electric eels, these creatures are not true eels but are members of the electroreceptive knifefish order Gymnotiformes, which is more closely related to carp and catfish.
Electric eels are known for their ability to generate electricity and stun their prey. They have three electric organs that contain cells called electrocytes. When the electric eel senses prey or feels threatened by a predator, electrocytes create an electrical current that can release up to 600 volts. Interestingly, baby electric eels can also produce electric discharges, but at a lower voltage than adult eels.
The electric discharges in baby eels help them navigate their environment and find food. As they grow, their ability to generate electricity becomes stronger, aiding in hunting and self-defence. They primarily use their electric fields to sense their surroundings, which is crucial as they are vulnerable to predators.
Electric eels are found in freshwater habitats in South America, particularly in the Amazon and Orinoco river basins. They are nocturnal, obligate air-breathing animals with poor vision. They grow continuously throughout their lives, adding more vertebrae to their spinal column.
Electric eels were once believed to belong to the genus Electrophorus electricus. However, in 2019, this genus was divided into three species based on DNA divergence, ecology, habitat, anatomy, physiology, and electrical ability. These species are E. electricus, E. voltai, and E. varii.
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Electric eels are not true eels, they are South American knifefish
Electric eels are not true eels, but rather South American knifefish. They are a genus, Electrophorus, of neotropical freshwater fish from South America and belong to the family Gymnotidae, of which they are the only members of the subfamily Electrophorinae. They are known for their ability to stun prey by generating electricity, delivering shocks of up to 860 volts.
Electric eels were first studied in 1775, which contributed to the invention of the electric battery in 1800. They are not closely related to true eels (Anguilliformes) but are members of the electroreceptive knifefish order Gymnotiformes, which is more closely related to catfish. In 1864, Theodore Gill moved the electric eel to its own genus, Electrophorus, derived from the Greek words "ḗlektron" and "phérō", meaning "electricity bearer".
In 2019, electric eels were divided into three species: Electrophorus electricus, Electrophorus voltai, and Electrophorus varii. These species have non-overlapping distributions in the northern part of South America, with E. electricus in the north, E. voltai in the south, and E. varii in the central region. Electric eels inhabit the quiet, slow-moving waters of oxbow lakes, streams, pools, and flooded forests of the Amazon and Orinoco Rivers.
Electric eels have a slender, snake-like body and a flattened head. Their skin is thick and scaleless, usually dark grey to brown, with a yellow-orange underside. They lack pelvic fins and dorsal fins but have an elongated anal fin that helps them maneuver through the water. Electric eels have three pairs of electric organs—the main organ, Hunter's organ, and Sachs' organ—which make up about 80% of their body. These organs enable them to generate two types of electric discharges: low voltage and high voltage.
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They are nocturnal and air-breathing, needing to surface every 10 minutes
Baby electric eels are called fries or fingerlings. They are born tiny and transparent, and they can produce electric discharges, but at a lower voltage than adult eels. They use their electric fields to navigate and find food. As they grow, their ability to generate electricity becomes stronger, aiding in hunting and self-defence.
Electric eels are not true eels but are members of the electroreceptive knifefish order Gymnotiformes, which is more closely related to carp and catfish. They are nocturnal and air-breathing, needing to surface every 10 minutes. This is a key difference between electric eels and true eels, which can breathe underwater. Electric eels have three electric organs that contain cells called electrocytes. When the electric eel senses prey or feels threatened by a predator, electrocytes create an electrical current that can release up to 600 or 860 volts.
Electric eels are found in freshwater habitats in South America, particularly in the Amazon and Orinoco river basins. They are known to spend the majority of their lives as elvers, which are freshwater eels that work their way upstream. Elvers are also the second stage of life for all types of eels, following the larval stage. The term "elver" is thought to be a corruption of "eel fare", referring to the daylight passage in the spring of eels swimming upstream along the Thames.
All eels begin life as flat and transparent larvae, called leptocephali, and they drift in the sea's surface waters, feeding on small particles that float in the water. Larval eels then metamorphose into glass eels, which are considered a delicacy. After the glass eel stage, eels migrate to rivers and ponds, becoming elvers.
Eels undergo considerable development from the larval stage to adulthood, and they are usually predators. They are known for their strong jaws and sharp teeth. While they are mostly nocturnal and prefer to stay hidden, eel attacks are rare.
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Baby eels are transparent and sometimes harvested for food
Baby eels, or "elvers" in English, are known as "angulas" in Spain, where they are considered a delicacy. They are also referred to as "glass eels" due to their transparency. They are highly prized and can cost up to 1,000 euros per kilo, making them one of Spain's most expensive foods. The high price is partly due to overfishing, seasonality, and high demand from Spain, Europe, and Asia.
Angulas are juvenile European eels that are caught as they return to their ancestral rivers and streams. They are born in the Sargasso Sea, a region in the Atlantic Ocean, and spend two to three years travelling back to Northern Spain via the Gulf Stream. This long journey poses challenges for scientists studying eel populations, as breeding them in captivity is difficult.
The traditional way of preparing angulas involves frying garlic and hot peppers in olive oil before adding the eels. While they may not have a strong flavour, their delicate, meaty texture is valued. In fact, their scarcity and high price have led to the creation of imitation angulas, known as "gulas," made from processed fish paste. These imitation baby eels are widely available in Spain and are served in various dishes, including pasta and pinchos, the Spanish equivalent of tapas.
The harvesting of baby eels for food has had a significant impact on their population. Dams, environmental degradation, and overfishing have led to a decline in eel numbers, and they are now listed as critically endangered. This has resulted in stricter regulations and higher prices for angulas.
In summary, baby eels, or angulas, are transparent and highly valued as a delicacy in Spain. Their unique life cycle, delicate preparation, and scarcity contribute to their high price and their status as a gourmet food item. However, the demand for baby eels as a food source has also led to conservation concerns and efforts to protect and sustain their populations.
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Frequently asked questions
A baby electric eel is called a fry or a fingerling.
No, electric eels are not closely related to true eels (Anguilliformes) but are members of the electroreceptive knifefish order Gymnotiformes.
Electric eels are primarily found in freshwater habitats in South America, particularly in the Amazon and Orinoco river basins.
Yes, baby electric eels can produce electric discharges, but at a lower voltage than adults.
Electric eels begin life as larvae and undergo metamorphosis before becoming adults. They are born tiny and transparent, and are referred to as fries or fingerlings. As they grow, their ability to generate electricity becomes stronger, aiding in hunting and self-defense.
