Freshwater Fish and Fishkeeping

15 Points Per Correct Answer - No time limit  

1. Which aquarium resident was the first fish to get its entire genome mapped? Zebra Danio Endler's Livebearer Guppy Tiger Barb

2. Only a few freshwater fishes bear fully-formed young. Besides the familiar guppy, platy and molly, livebearers include several American darters. Barbus viviparus. Gambusia, the mosquitofish. Channa, the snakehead.

3. These beauties were first found on the lower slopes of Pai-yun Shan, near Guangdong (formerly Canton), China, traditionally by a good man named Tan. White Clouds Goldfish Chinese Algae-Eaters Paradisefish

4. How would you best characterize Otocinclus, the miniature Loricariid catfish? herbivore omnivore dentivore piscivore

5. Your Harlequin Fish are behaving strangely. One is turning upside-down and quivering under a plant leaf. It is "flashing" in reaction to gill parasites. It is suffering from dropsy or bloat. It is "shimmying' for lack of electrolytes. It is spawning.

6. Not all skin parasites ("ectoparasites") are single-celled protists. For instance, some minute flatworms, multicellular animals, that attack skin and gills are Oodinium or "velvet." Ichthyophthirius. Dactylogyrus flukes. Costia.

7. You know that filtration may be mechanical, chemical or biological. Most filters combine more than one function. Though "redundancy" is a good thing, an example of a purely mechanical filter medium would be an undergravel filter. hydrogen peroxide. granular activated carbon. diatomaceous earth.

8. Don't try to tempt Schomburgk's Leaf Fish with regular fish flakes. It's only interested in freeze-dried living foods, like bloodworms. boiled shredded spinach. sinking algae wafers. live baby guppies.

9. Angelfish have some close cousins among South American cichlids. These include all of these. Severums. Discus species. Uaru.

10. Endler's Livebearer comes from Venezuela. Fears about its survival do *not* include fears that its restricted home environment will be lost to urban development. that it is becoming naturalized in Florida's Everglades. that it will be lost through hybridizing with its domestic guppy relatives. On the contrary! These are all legitimate current fears.