### animal | vertebrate | fish:

Marine fish
* All marine fish drink water to avoid osmotic loss.
* Most marine fish eat food
  - new life spectrum fish food
  - feed on plankton
  - find in oceans
  - have ability
* Most marine fish inhabit oceans
  - open oceans
  - live in environments
  - occur in sea
* Most marine fishes are oviparous and release eggs into the water
  - have a very large bladder and it is frequently foimd to be full of urine
* Some marine fish have body fluid
  - larvae
  - the ability to produce light through bioluminescence
* are a dependable source of iodine
  - highly diverse, with a wide variety of different life cycles
  - primarily from the Gulf of Mexico, near the Mississippi Sound
* drink water and excrete only a small volume of very concetrated urine.
* face just the opposite problem from that of freshwater fishes.
* provide good examples of water re- lationships in the ocean.
* spend their entire life in salt water.

Migratory fish
* Most migratory fish prefer warm surface water
* are an important part of our heritage and economy
  - some of our most interesting and important aquatic species
* prefer surface water.
* spend most of their lives at sea, but return to fresh water to spawn.

Modern fish
* Some modern fishes display interesting modifica- tions of the general reproductive pattern.
* have a great variety of responses to different environments
  - one of two kinds of swim bladder

### animal | vertebrate | fish:

Molly
* Mollies are brackish fish
  - easy fish to breed in the aquarium
  - known to sometimes harass such species by nipping their fins
  - peaceful fish and can be kept in a community tank
  - similar to other livebearers in that they are prolific breeders
  - social fish, and are best when kept in groups
  - the same, especially the black mollies
  - come in many different colour varieties including sailfins
  - do best in a group with a few males and several females
* Mollies have dorsal fins
  - enlarge dorsal fins
  - habits
* Mollies includes brains
  - breasts
  - cell membranes
  - chest cavities
  - chests
  - corpi
  - cytoplasm
  - ears
  - faces
  - fish scales
  - fishbones
  - flippers
  - heads
  - nuclei
  - pedal extremities
  - plasma membranes
  - rib cages
  - sections
  - skulls
  - sperm
  - sterna
  - tail fins
  - vacuoles
  - vertebrate feet
  - yolks
* Mollies live in salt water
  - show interest
* Most mollies are solid black in color
  - go through similar lifespans, and can be long-lived fish under the right conditions
* Most mollies have enlarge dorsal fins
* Most mollies live in salt water
* Some mollies have hormones.
* Some mollies reach maturity
  - sexual maturity

### animal | vertebrate | fish:

Mosquito fish
* All mosquito fish are livebearers.
* Mosquito Fish give birth to live young, rather than laying eggs.
* Most mosquito fish have tails.
* are characterized by short bodies and flat heads with terminal mouths pointing upward
  - compatible with most ornamental pond fish
  - consumers because they eat producers
  - for backyard sources only
  - hardy and can live in many types of water habitats for several years
  - known for their ability to survive in almost any collection of water outside
  - native or introduced to much of the United States
  - often particularly effective in small ponds, water tanks etc
  - small freshwater fish that eat mosquito larvae
  - territorial
* maintain levels.
* serve a very useful function in a pond.

Mosquitofish
* Most mosquitofishs have heads
  - show behavior
* Some mosquitofishs have rays
  - occupy areas
* Some mosquitofishs reach maturity
  - stomachs
* includes brains
  - corpi
  - cytoplasm
  - flippers
  - plasma membranes
  - sperm
  - vacuoles
* need food
  - supplementary food

### animal | vertebrate | fish | mosquitofish:

Female mosquitofish
* Some female mosquitofishs reach maturity
* are one of our few native live-bearing fish.