Fish with a tolerance for a wide range of salinity levels. Some Euryhaline Fish Fish with a tolerance for a wide range of salinity levels.

Fresh water

. 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

Temperate brackish water

Three-spine stickleback Temperate zone brackish water fish Three-spine stickleback Temperate zone brackish water fish. Sometimes with armor plates. No membrane connecting anterior dorsal spines.

Tropical brackish water

Black molly Sometimes sold in pet stores as an easy freshwater fish for beginners, this is actually a tropical brackish water fish.

Sailfin molly

Bumblebee goby Tropical brackish water fish popular with aquarists

Smallest vertebrates in the world

Fused pelvic fin: modified into a sucker

Archer fish tropical brackish water fish with a remarkable spitting ability

Marine (but near a coast)

Atlantic menhaden The adults of this commercially important fish spawn offshore and the larvae drift into estuaries to grow.

Kind of a generic fish

Tidepool sculpin Can withstand wide changes in their environment within the course of a day.

What could happen here?

Super-saline habitat

An example of an EXTREMOPHILE Pup fish Remarkable little fish that lives in hot super-saline pools in the desert

Devil’s Hole in Death Valley

And now a little about Elodea

Elodea CELL WALL CHLOROPLASTS: organelles used for photosynthesis VACUOLE: water storing organelle CELL WALL