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

Presentation on theme: "Fish with a tolerance for a wide range of salinity levels."— Presentation transcript:

1 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.

2 I. Fresh water

3 . 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.

4 Gonopodium: modified anal fin for depositing milt
Large abdomen with gravid spot

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6 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!!!

7 What’s for lunch? 367 pounds of burritos!

8 Reproduction possibilities in the animal kingdom:
Oviparous (egg laying) or Viviparous (live birth)

9 ovoviviparous Emerging baby

10 II. Temperate brackish water

11 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.

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13 III. Tropical brackish water

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

15 Sailfin molly

16 B. Bumblebee goby Tropical brackish water fish popular with aquarists

17 Smallest vertebrates in the world

18 Fused pelvic fin: modified into a sucker

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20 C. Archer fish tropical brackish water fish with a remarkable spitting ability

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23 IV. Marine (but near a coast)

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

25 What could happen here?

26 B. Atlantic menhaden Adults spawn offshore and the larvae drift into estuaries to grow.

27 Kind of a generic fish (the “Atlantic shad”)

28 V. Super-saline habitat

29 An example of an EXTREMOPHILE
A. Devil’s Hole Pup fish Remarkable little fish that lives in hot super-saline pools in the desert

30 Devil’s Hole in Death Valley

31 Honorable Mentions

32 Figure Eight Pufferfish

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34 mudskipper

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41 And now a little about Elodea

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