knifefish
Blade-shaped river dweller
Knifefish are freshwater fish with long, blade-shaped bodies that taper to a point.
Native to Africa and the Americas, they swim by undulating a single fin along their underside rather than using their tails.
Many species, including the electric eel, generate electrical fields for navigation or stunning prey.
Stretched beyond usual dimensions
- compressedReduced by pressure
- undulatingMoving in waves
- scalelessLacking epidermal plates
- caudalOf the tail
ribbon-like · streamlined · tapering · locomotion · blade-like
Non-saline aquatic environment
- AmazonGreek warrior women
- riverineOf or by streams
- tropicalOf hot, humid regions
- aquariumTank for keeping fish
habitat · Orinoco · African · substrate · vegetation · hiding · tank · brackish
Release of substance outward
- pulseArterial blood throb
- signalMessage-conveying cue
- receptorSignal-receiving molecule
- ampullaeSmall rounded vessels
conductivity · voltage · impulse · communication · navigation · sensory · field · frequency
elongated
Stretched beyond usual dimensions
- compressedReduced by pressure
- undulatingMoving in waves
- scalelessLacking epidermal plates
caudal · ribbon-like · streamlined · tapering · locomotion · blade-like
freshwater
Non-saline aquatic environment
aquarium · habitat · Orinoco · African · substrate · vegetation · hiding · tank · brackish · current
discharge
Release of substance outward
ampullae · conductivity · voltage · impulse · communication · navigation · sensory · field · frequency · amplitude
crepuscular
Relating to dusk
shy · hiding · reclusive · burrowing · shelter · nighttime · light-sensitive · dawn · dusk · concealment
- knifefish
- freshwater fishsalmon, trout, bass, catfish, carp
- Asian Fishbarramundi, carp, grass carp, silver carp, koi
- bony fishherring, sardine, anchovy, carp, goldfish
- electric fishelectric eel, electric ray, stargazer
- scaleless fishhagfish, lamprey, eel, catfish, lungfish
knifefishpufferfish
Fish that expands
boxfish · sunfish · ocean sunfish · globefish · balloonfish
knifefishmarine fish
Sea-dwelling aquatic creature
saltwater fish · deep-sea fish · shark · tuna · marlin
fish, knife, fisherman, fishbowl, fishery, fishlike, fishmonger, fisheye, knifelike