lungfishes
Fish with lungs
Lungfishes are freshwater fish that possess both gills and primitive lungs, allowing them to breathe air.
Found in Africa, South America, and Australia, they can survive droughts by burrowing into mud and entering a dormant state.
They represent an ancient lineage closely related to the ancestors of land vertebrates.
Warm-season torpor state
- aestivationTorpor during hot periods
- dormancySuspended biological activity
- droughtProlonged water scarcity
- burrowAnimal's dug dwelling
dry season · desiccation · survival · metabolism · facultative · monsoon · mud · riverbed
Four-limbed vertebrate animal
- ancestorPredecessor in lineage
- air-breathingUsing lungs for oxygen
- freshwaterNon-saline aquatic environment
- primitiveIn earliest form
vertebrate · Devonian · fossil · living fossil · gills · swim bladder · cartilaginous · scales
Native to one area
- biodiversityRange of life forms
- endangeredAt risk of extinction
- conservationPreventing waste or loss
Strikingly unusual, foreign-seeming
- rareSeldom found or seen
- tropical fishWarm-water ornamental species
- tankLarge storage vessel
- freshwater aquariumEnclosed habitat for riverine species
carnivorous · feeding · captivity · specimen · longevity · hardy · nocturnal · substrate
estivation
Warm-season torpor state
- aestivationTorpor during hot periods
- dormancySuspended biological activity
- droughtProlonged water scarcity
burrow · dry season · desiccation · survival · metabolism · facultative · monsoon · mud · riverbed · oxygen
tetrapod
Four-limbed vertebrate animal
- ancestorPredecessor in lineage
- air-breathingUsing lungs for oxygen
- freshwaterNon-saline aquatic environment
primitive · vertebrate · Devonian · fossil · living fossil · gills · swim bladder · cartilaginous · scales · eel-like
endemic
Native to one area
- biodiversityRange of life forms
- endangeredAt risk of extinction
- conservationPreventing waste or loss
exotic
Strikingly unusual, foreign-seeming
- rareSeldom found or seen
- tropical fishWarm-water ornamental species
- tankLarge storage vessel
freshwater aquarium · carnivorous · feeding · captivity · specimen · longevity · hardy · nocturnal · substrate · filtration
lungfishestuna
Large edible ocean fish
mackerel · deep-sea fish · marlin · trout · sharks
lungfishescichlids
Spiny-finned freshwater fish family
seahorses · anglerfish · pufferfish · sunfish