Fish with a tolerance for a wide range of salinity levels. N-20 Euryhaline Fish Fish with a tolerance for a wide range of salinity levels.
I. Fresh water
. A. Gambusia/ mosquitofish Named after the Cuban Spanish term for “useless”, this live-bearing freshwater fish is renowned for helping control insect populations. It also demonstrates sexual dimorphism.
Gonopodium: modified anal fin for depositing milt Large abdomen with gravid spot
Can consume up to 167% of body weight in one day!!! Sometimes called “larvivorous” Can consume up to 167% of body weight in one day!!!
What’s for lunch? 367 pounds of burritos!
Reproduction possibilities in the animal kingdom: Oviparous (egg laying) or Viviparous (live birth)
ovoviviparous Emerging baby
II. Temperate brackish water
A. Three-spine stickleback Temperate zone brackish water fish A. Three-spine stickleback Temperate zone brackish water fish. Sometimes with armor plates. No membrane connecting anterior dorsal spines.
III. Tropical brackish water
A. Black molly Sometimes sold in pet stores as an easy freshwater fish for beginners, this is actually a tropical brackish water fish.
Sailfin molly
B. Bumblebee goby Tropical brackish water fish popular with aquarists
Smallest vertebrates in the world
Fused pelvic fin: modified into a sucker
C. Archer fish tropical brackish water fish with a remarkable spitting ability
IV. Marine (but near a coast)
A. Tidepool sculpin Can withstand wide changes in their environment within the course of a day.
What could happen here?
B. Atlantic menhaden Adults spawn offshore and the larvae drift into estuaries to grow.
Kind of a generic fish (the “Atlantic shad”)
V. Super-saline habitat
An example of an EXTREMOPHILE A. Devil’s Hole Pup fish Remarkable little fish that lives in hot super-saline pools in the desert
Devil’s Hole in Death Valley
Honorable Mentions
Figure Eight Pufferfish
mudskipper
And now a little about Elodea
Elodea CELL WALL CHLOROPLASTS: organelles used for photosynthesis VACUOLE: water storing organelle CELL WALL