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Eel
Eels. Eels are a large group of fish in the order Anguilliformes, which holds 1,000 species total. Although electric eels, spiny eels and cusk eels are not true eels, we have chosen to include them on this iceberg.
Species/Group
Fact
Other
Extinct ExNot "Eel" Ps
Tier 1
Eels are a Type of Fish
Lack of Pelvic Fins
Nocturnal
Leptocephalus
Eels as Food
Electric Eels Aren't True EelsPs
Eels can Climb on Land
Moray Eels
Freshwater Eels
Carnivores
Tier 2
Largest Eel
Gymnothorax polyuranodon
European conger
Glass Eels
Eels Have Two Sets of Jaws
Poor Eyesight
Snake eels
Palauan primitive cave eel
Ribbon eel
Poor Hearing
American Eels are Endangered
Shortfin and Longfin Eels
Tier 3
AnguillavusEx
Smallest Eel
Deepest (True) Eel
Bean's sawtooth eel
Brantevik Eel Lifespan
Obstacle Climbing
Chlopsidae
Saccopharyngiformes
Shrimp - Moray Symbiosis
Knot Tying
Low Bone Density
Seasonal Migration
Courtship
Tier 4
Eels Can Swim Backwards
Anguilla australis x Anguilla anguilla
Pythonichthys arkansasensisEx
Ciguatera poisoning
Saccopharynx ampullaceus
Cooperative Hunting
All American/European Eels Spawn in the Bermuda Triangle
Rice-paddy eel
Regeneration
Immune System
Esophagus as an Osmoregulatory Organ
Magnetic Compass
Sensory Receptors (Cusk Eels)Ps
Tier 5
MylomyrusEx
Giant leptocephalus
Bakasi
Sexual dimorphism in morays
Anarchias
European Eels are Non-Panmictic
Endurance
Eel Skin is a Tendon
Fluorescent Proteins in Morays
Deep sea origin of Freshwater eels
Remote Control (Electric Eels)
Parasitic eel
Brackish Adapting
Anguillavus mazeniEx
Tier 6
Granite moray
Lack of Premaxilla
Freshwater vs Saltwater Growth
Resorption of Blood
Feminisation of Japanese Eels
Taiwan
Cave dwelling moray
FishIDK
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Animals & Nature
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06 Jan 2026
26 Jan 2026
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