01 Pulse the water
Weak EODs map objects in the dark.
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
Upright syngnathids whose male pregnancy and dried-medicine trade made a small fish a CITES case.
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