### animal | vertebrate | fish:

Larger fish
* are oftentimes the last members to assail shallow water.
* do prefer large plugs.
* eat the crawfish.
* eat the smaller fish and the mercury builds up in their tissues
* exist in some remote lakes.
* feed heavily on crayfish and also take small fishes.
* have a greater probability of having a toxic dose.
* move to inshore structure in the winter.
* predate young longnose gars.
* take proportionately more terrestrial insects.
* tend to bioaccumulate higher methylmercury levels
  - have a more pronounced flavor

Larval fish
* Most larval fish eat zooplankton.
* Most larval fish live in shallow water
* are cool and very little studied in streams, mostly because they are hard to identify.
* tend to enter areas of low dissolved oxygen to escape predation from larger fish.

Little fish
* Little Fish is the kind of restaurant that happens only once every couple years.
* are eaten by birds and bigger fish, and so on throughout the tangled food web.
* eat algae.
* eat the lower marine life forms and concentrate the pesticides in their bodies
  - phytoplankton, big fish eat the little fish, and so on

### animal | vertebrate | fish:

Lungfish
* Most lungfishes have circular heads
  - different appearances
  - ear ears
  - eyesights
  - fins
  - organs
  - patterns
  - poor eyesights
* Most lungfishes inhabit shallow water
  - live in ponds
  - occupy areas
* Most lungfishes possess external gills
  - survive in water
* Some lungfishes have features
  - lungs
  - visibility
  - inhabit rivers
* Some lungfishes live for several years
* Some lungfishes possess fins
  - holes
  - single fins
  - share characteristics
* also have gills, which are the main organs for gas exchange in Australian lungfishes.
* are highly specialized lobe-fins
  - oviparous and reproduce by laying eggs
  - voracious eaters
* have appearances
  - capability
* includes brains
  - breasts
  - cell membranes
  - chest cavities
  - chests
  - corpi
  - cytoplasm
  - faces
  - fish scales
  - fishbones
  - flippers
  - nuclei
  - pedal extremities
  - plasma membranes
  - rib cages
  - sections
  - skulls
  - sperm
  - sterna
  - tail fins
  - vacuoles
  - vertebrate feet
  - yolks
* live in fresh water, but coelacanths are marine
* retain their notochords throughout their lives.

### animal | vertebrate | fish | lungfish:

African lungfish
* Most african lungfishes inhabit shallow water
* Some african lungfishes have lungs
  - possess lungs
* are omnivorous and relatively easy to feed
  - too predatory to be kept in a community tank
* have some fascinating adaptations.
* possess two lungs and are obligate air-breathers.

Australian lungfish
* Most australian lungfishes have appearances
  - different appearances
* Some australian lungfishes have lungs
* are unable to survive while breathing only air.
  - poor eyesights

Male fish
* Some male fish return after just two years.
* begin defending territories along shore where they create shallow nests.
* build bubble nests within the leaves or at the edge.
* develop a long, hooked snout with large teeth
  - eggs in testes
* have one obvious hole and one very small, barely detectable hole just past their anal fin.
* start making female egg proteins.
* turns a blacker tinge when guarding the nest.