01 Pulse the water
Weak EODs map objects in the dark.
Darker cells mean a higher score for this topic on that metric.
Speed24
Intelligence25
Range28
Resilience77
Cultural impact28
Ecological role34
LessMore
Last reviewed Sources & creditsMedia creditsMethodology
Quick answers
Is an electric eel a true eel?
No. It is a gymnotiform knifefish. The body plan and voltage organ are South American, not Anguilliform.
How many species are there now?
A 2019 Nature Communications paper split Electrophorus into three: E. electricus, E. voltai and E. varii. Voltage and DNA both argued for the split.
How strong is the shock?
E. voltai has been measured near 860 V. That is a prey-stun and defence pulse, not a household-current analogy that holds in every tank.
What did Humboldt actually do in 1800?
His account of horses herded into a pool of eels became a European science anecdote. Later readers treated it as a method; it was also travel theatre.
Did electric eels inspire the battery?
Volta and Galvani debates used animal electricity. Electrophorus was a New World exhibit in that argument, not the sole inventor of the pile.
How do they hunt?
A high-voltage volley can freeze prey; a weaker field maps the night water. Kenneth Catania high-speed videos in the 2010s showed doublets that twitch hidden fish.
Operating a electric eel life is a loop: sense, decide, act, and stay inside an energy and legal envelope.
Steps are type-level -- hunt, migrate or spawn -- not a promise that every individual follows the same film sequence.
Principles
Energy in, work out
Night hunting of fish and invertebrates. High-voltage volleys are metabolically expensive; weak pulses map the murk more cheaply.
Information before motion
Active electrolocation plus the same organ used as a club. Eyes are secondary in tannin water.
Replacement rate
Slow breeders (whales, apes, albatrosses, tigers) cannot outrun a short political cycle. Fast clutch species still fail if the nest site vanishes.
Place is part of the phenotype
A electric eel without its lake, ice, anemone or gravel is a different, usually failing, animal.
Human systems are now habitat
Quotas, feeders, reserves and films rewrite survival as much as weather. Air-breathing helps a stagnant pool; a dam and a drought do not care about voltage. LC is a range statement.
Diagrams
Electric eel forage / hunt loop
Sensesense
Orientmove
Strikeact
Handlehandle
Spawninvest
Recruitleave
Electric eel life-cycle loop
Hatchstart
Reargrow
Movemove
Feedlearn
Spawnbreed
Die or repeatend
Life-cycle steps
02 Doublet twitch
A volley can make hidden prey move -- Catania videos.
03 Strike and swallow
A stiffened fish is an easy gulp.
04 Defend with a volley
High voltage is also a keep-off sign to a wading mammal.
05 Breathe air
A vascular mouth lets the fish use a dying pool.
06 Lay eggs in a nest
Some accounts of male-guarded foam; field work is still thinner than the voltage myth.
Hard limits
Physiological envelope
Air-breathing helps a stagnant pool; a dam and a drought do not care about voltage. LC is a range statement.
Place dependence
Without the breeding site or forage pulse, brochure behaviour is theoretical.
Human and legal limits
Quotas, listings and trade rules now bound real populations as tightly as weather.
Keep exploring
More in Fish
🦈
Great white shark
Apex lamnid whose warm muscle, broad diet and 1975 cinema still outrun the tagging papers.
Overall 66 🐟Salmon
Anadromous fishes that move ocean fat onto spawning gravels -- and into forests, treaties and hydropower fights.
Overall 63 🐟Atlantic bluefin tuna
A warm-bodied tuna whose Tokyo auction prices and ICCAT quotas made a single fish into a geopolitical unit.
Overall 54 🐠Clownfish
Anemone-dwelling damselfish whose 2003 film fame became a capture-and-reef case study.
Overall 41 🐴Seahorse
Male-pregnancy fish — Hippocampus since Linnaeus (1758), dried trade, and CITES Appendix II (2002).
Overall 28 🎏Koi
Domesticated carp whose Niigata colour mutations became a global pond aesthetic -- not a wild goldfish substitute.
Overall 42 🐡Pufferfish
Beak-toothed inflators whose tetrodotoxin made a Japanese cuisine and a genome project out of one family.
Overall 41