Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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The fin most commonly mistaken as a “tail” is the _________.
a. | pelvic fin | c. | anal fin | b. | Caudal fins | d. | spiny rays |
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2.
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Boney fish belong to which class?
a. | osteichthyes | c. | chondrichthyes | b. | acanthodians | d. | ostracoderms |
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3.
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Fish scales are actually.......
a. | a second skin | b. | a slimy mucus | c. | made of the same
material as your finger nails | d. | thin bone
plates |
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4.
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Fish with modified swim bladders that allow them to absorb atmospheric oxygen
are more commonly found in ......
a. | rivers | c. | water with low amounts of oxygen | b. | oxygen rich
lakes | d. | all the same places
as normal fish |
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5.
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A fast-moving fish will more likely have an over developed ____________.
a. | pelvic fin | c. | anal fin | b. | swim bladder | d. | caudal fin |
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6.
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Lateral line disease targets the neuromast cells. This will reduce the
fish’s ability to react to....
a. | changes in water pressure | c. | temperature | b. | sound | d. | all
are the correct answer |
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7.
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Fish found in very low light are most likely to have large _______.
a. | barbells | c. | swim bladder | b. | anal fin | d. | kidneys |
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8.
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Ich is a very common parasitic disease. Its most common symptom is
________.
a. | black spots | c. | swimming in circles | b. | white “fuzzy”
spots | d. | bleeding |
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9.
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A fish that is attempting to scratch itself against an object in the tank or is
moving its gills rapidly which could be described as “panting” is most likely suffering
from_______.
a. | white spot disease | c. | a fluke infection | b. | slime disease | d. | white fungus
growth |
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10.
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Some species of cichlids are mouth- brooders. During this time it is common for
a parent to _______.
a. | build a nest | c. | not eat for up to two weeks | b. | ignore other fish in
the tank | d. | swim in large
circles around the tank |
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11.
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In ovoviviparous fish, the fry are nourished by ___________.
a. | blood from the female | c. | algae | b. | a yolk sac | d. | plankton |
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12.
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To stimulate breeding in live-bearing fish one should _________.
a. | raise that tank temperature a couple degrees | b. | chill the tank at
least five degrees | c. | shut off all filters | d. | introduce other new
fish to the tank |
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13.
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Mouth fungus is a misleading name for the disease because_________
a. | it only affects the tail of the fish | c. | it is caused by
bacteria | b. | it can affect any part of the fish | d. | it is caused by a fluke
worm |
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14.
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In general, when feeding fish its best to___________.
a. | feed the same kind of food each time | b. | feed only flake food | c. | feed the most
expensive food that you can afford | d. | only give the fish what they will eat in 3-5
minutes |
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15.
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The guideline for stocking a freshwater aquarium with fish is:
a. | 1 inch of fish for every gallon of water | b. | 1 inch of fish for
every foot of tank length | c. | one inch of fish for every 48 square inches of
surface area of the tank | d. | 1 inch of fish for every 30 square inches of
surface area in a tank |
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16.
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Air pumps in a tank serve to:
a. | introduce oxygen and disperse carbon dioxide | b. | introduce carbon
dioxide and disperse oxygen | c. | pump in algae killing
bubbles | d. | provide plants with oxygen |
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17.
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The purpose of filtration is primarily to:
a. | oxygenate the water | b. | remove solid waste and uneaten
food | c. | remove algae | d. | feed important
plants |
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18.
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The purpose of activated charcoal is to
a. | feed plants | b. | absorb minerals and
chemicals | c. | trap food particles | d. | all are answers are
correct |
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19.
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Ammonia and nitrates are harmful waste chemicals in an aquarium. Identify the
three most important sources of these wastes.
a. | dirty filters, over feeding, over populated tank | b. | dirty filter, too
many plants or algae, sick fish | c. | failed to perform a water change, sick fish,
over populated | d. | over, feeding, increase in waste, lights on too long |
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20.
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Neutral pH is
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21.
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Three ways to remove chlorine from tapwater is
a. | aerate the water, use a nitrogen sponge, use chemical
dechlorinator | b. | aerate water, chemical dechlorinator, and calcium chips | c. | aerate water,
chemical dechlorinator, or charcoal filter | d. | all work equally
well |
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22.
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The specific gravity of aquarium saltwater is most often between
a. | 1.9 - 2.0 | c. | 26 - 31 | b. | 1.02 - 1.026 | d. | 10.26 - 10.31 |
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23.
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The guideline for selecting a heater for an aquarium is
a. | 10 watts per 1.5 gallons | c. | 20 watts per 1.5
gallons | b. | 10 watts per 1 gallon | d. | 20 watts per 1 gallon |
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24.
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The path of conversion of nitrogen based waste is
a. | nitrate to nitrite to ammonia | c. | ammonia to nitrate to
nitrite | b. | nitrite to nitrate to ammonia | d. | nitrate to ammonia to
nitrite |
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25.
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The two most important considerations to take into account when purchasing an
aquarium are
a. | size of fish wanted and their food types | b. | plants and
lighting | c. | light and fish wanted to keep | d. | budget and size of fish
wanted |
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26.
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About how many species of fish are there in the world?
a. | 10,000 | c. | 50,000 | b. | 100,000 | d. | more than
200,000 |
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27.
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Which culture is given credit as the first “fish keeper”
hobbyists?
a. | Chinese | c. | Africans | b. | Europeans | d. | South Americans |
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28.
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Why should an aquarium NOT be placed in front of a window?
a. | may attract birds | b. | may cause excessive algae
growth | c. | most fish don’t like sunlight | d. | sunlight damages fish
scales |
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29.
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About how much does water weigh per gallon?
a. | 5.2 lbs | b. | 1 lb | c. | 10.5 lbs | d. | 8.4
lbs |
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30.
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A good average temperature for aquariums is
a. | 65 F | b. | 80 F | c. | 75
F | d. | not all that important to know |
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31.
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Since surface area is an important consideration in determining the number of
fish an aquarium can house. It is better to have a(n)
a. | tank is taller than it is longer | b. | deeper than it is wider | c. | longer than it is
tall | d. | makes no Difference |
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32.
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Glass is a better choice of materials for an aquarium for the beginner than
acrylic because
a. | it does not scratch easily | b. | it is cheaper | c. | it is lighter
| d. | it does not scratch easily AND it is cheaper |
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33.
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Fish bowls are rarely a good choice to keep fish because
a. | they have poor surface to depth ratios | b. | too small of a space | c. | inhumane way for a
fish to spend its whole life | d. | all the choices are
correct |
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34.
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The hood on a tank serves to
a. | keep fish in | b. | is a state law requirement | c. | traps oxygen in the
tank | d. | are included in the purchase of the tank |
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35.
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Two advantages of keeping live plants in your aquarium are
a. | they always have snails with them and they are attractive to look
at | b. | they absorb carbon dioxide and release oxygen | c. | they absorb oxygen
and release nitrogen | d. | they absorb nitrogen and release carbon
dioxide |
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36.
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Never use soap or other cleaning agents on an aquarium because
a. | they will leave dangerous residues | b. | they may scratch the glass | c. | they will make foam
bubbles when fish are put in | d. | they will bleach the
plants |
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37.
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Storing tap water for at least 24 hours is important because
a. | it allows it to release all its nitrates | b. | changes it pH to
neutral | c. | most minerals and chlorine have broken down and dissipated | d. | important proteins
fish need are developed |
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38.
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The best way to determine if your tap water contains chloramine is to
a. | buy an expensive test kit | b. | taste the water for a “bleach”
flavor | c. | test the pH | d. | ask the water
department |
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39.
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A “cycled” aquarium means
a. | water is moving in a circle around the tank | b. | there is a fully
developed nitrogen cycle established for processing waste | c. | there is a fully
developed water cycle | d. | the pH is finally right in the
tank |
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40.
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The three most important things to look for in selecting a fish from a store
is
a. | it’s the biggest one in the tank, is a male and is actively
swimming | b. | is actively swimming, accepts food quickly, and is free of fungus or other visual
defects | c. | is fungus free, not too expensive and is a male | d. | accepts food, has
clear eyes, and is already pregnant |
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41.
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Floating your new fish sealed in the bag it came with in your aquarium allows
for it to
a. | slowly match the temperature of your aquarium | b. | match your aquarium
pH | c. | get used to the other fish | d. | make sure it is disease
free |
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42.
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It is important to vacuum out waste and uneaten food otherwise the waste
will
a. | slow algae growth | b. | fish will more likely lay more
eggs | c. | cause a buildup of ammonia | d. | slow plant
growth |
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43.
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Excessive algae growth may be a symptom of
a. | too many nitrates in the water | b. | too low pH | c. | lights on too
long | d. | too many nitrates in the water AND lights on too long |
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44.
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An easy way to maintain water quality is with water changes. About what
percentage should be changed each week
a. | about half | b. | 3/4 of the total tank
volume | c. | 10 - 20% | d. | never more than
5% |
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45.
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Earthworms are an excellent live food source for many fish because
a. | they are rich in proteins and cheap to buy | b. | all fish want to
kill food | c. | the mucus of the worms is good for the fish slime coat | d. | worms meet all
fishes diet needs |
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46.
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Koi differ from goldfish in that
a. | only Koi can be white in color | b. | Koi grow much larger than
goldfish | c. | goldfish are the only ones native to Asia | d. | goldfish are much
harder than Koi |
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47.
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Although there is no biological separation among the varieties of goldfish,
breeders have created strains with discernable characteristics. Which if the following is not a
strain of goldfish
a. | jikin | b. | fantail | c. | lion head | d. | zebra
tail |
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48.
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The most important nutrient in Koi’s diet is
a. | fats | c. | proteins | b. | carbohydrates | d. | vegetables |
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49.
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Community tanks can best be described as
a. | a tank shared by the whole neighborhood | b. | a tank stocked by a
diverse group of fish that all get along with each other | c. | a tank with fish and
plants | d. | a tank stocked with aggressive fish |
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50.
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Best advice to a first time fish buyer is
a. | plan ahead and know all about the fish you are looking for | b. | go on which fish is
prettiest | c. | only buy fish that are big | d. | only buy fish that are
small |
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51.
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Top-water fish are
a. | found only at the top of the tank | b. | are all Asian fish | c. | are most often found
near the top of the tank | d. | are most often fast
swimmers |
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52.
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Mid-water fish include
a. | guppies, goldfish, and sharks | b. | tetra, angles, and guppies | c. | barbs, angles, and
red-tailed sharks | d. | barbs, tetra, and glass
catfish |
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53.
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The Arowana should be left to the expert keepers because
a. | its very large adult size | b. | predatory nature | c. | its leaping
ability | d. | all are correct |
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54.
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The purpose of a hospital tank is to
a. | isolate a sick or injured fish for treatment | b. | quarantine a new
fish to protect against incoming diseases | c. | isolate a sick or injured fish for treatment
AND quarantine a new fish to protect against incoming diseases | d. | none are
correct |
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55.
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A sudden loss of appetite is a likely indication that
a. | the fish does not want your food type | b. | the fish needs more light | c. | the fish needs more
plastic plants | d. | none are correct |
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56.
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It is important for new fish keepers to use commercially prepare disease
treatments when facing a disease in the tank because
a. | many of the medicines need very precise doses | b. | commercial remedies
are often less expensive than home-made ones | c. | only commercially prepared medicines are
legal |
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57.
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Culling is an important part of fish husbandry. The most important
considerations in selecting fish to cull are
a. | deformities | b. | poor coloration patterns | c. | undersized | d. | all examples should be
culled |
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58.
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Infusoria is the food of choice for
a. | live-barer fry | b. | adult cichlids | c. | many egg-layer
fry | d. | most plant eaters |
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59.
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Baby brine shrimp are often needed by many predatory fry as they become
juveniles because
a. | it promotes faster culling | b. | helps with tooth
development | c. | feeds the urge to kill food | d. | improves
coloration |
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60.
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Many people believe that freshwater fish are easier to keep than saltwater fish
because
a. | freshwater fish can tolerate drastic changes in a tank better than
saltwater | b. | freshwater fish eat more different kinds of foods | c. | saltwater fish must
all be kept in larger tanks | d. | saltwater fish get diseases more
often |
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61.
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When replacing evaporated water from a marine aquarium you should only use
freshwater because
a. | it is cheaper than saltwater | b. | over time the fish need less
salt | c. | salt does not evaporate so it is still in the tank | d. | the pH will change
too much if you use saltwater |
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62.
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The ideal range for pH of a marine tank is
a. | 7.0 | c. | 9.5 | b. | 8.3 | d. | does not matter that
much |
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63.
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Protein skimmers work by
a. | making lots of foam | b. | causing proteins to sink to the bottom of the
tube | c. | surface tension on bubbles attracting proteins and floating them to the top of the
tube | d. | trapping waste particles in a foam pad |
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64.
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Few marine hobbyists keep plants in their tanks because
a. | most don’t like plants | b. | the plants grow too fast in marine
tanks | c. | plants cloud saltwater | d. | there are few plants that can tolerate
saltwater |
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65.
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Live rock is
a. | calcium rock covered with sponges, algae, and other living
creatures | b. | the shells of once living corals | c. | shells inhabited by hermit
crabs | d. | a common name for corals |
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66.
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A marine aquarium is said to be “cycled” when
a. | at least two months have gone by since you set up your tank | b. | the nitrogen cycle
is fully functional | c. | the pH stops rapidly
changing | d. | you add your first fish |
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67.
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Two ways to speed up the aquarium maturation process are
a. | add fish on the first day and add water from someone else’s
tank | b. | add commercially prepared bacterial solutions and a fish on the first
day | c. | add commercially prepared bacteria and water from someone else’s
tank | d. | there is no way to rush this process |
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68.
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Adding a territorial fish such as a damsel first makes sense because
a. | it allows that fish to stake out its turf | b. | damsels make little
waste so it won’t interfere with adding more fish later | c. | territorial fish
don’t mind being alone | d. | it does not make sense to add a territorial
fish before other fish are added |
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69.
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Two keys for selecting a fish for beginners is
a. | color and hardiness | b. | tolerance for the fish you already have and
hardiness | c. | cost and country of origin | d. | ease of
reproduction |
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70.
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In selecting a marine fish at the store remember to
a. | insist that you see it eat | b. | that the fish is free of cuts or other
damage | c. | is actively swimming | d. | all are
required |
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71.
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The typical temperature of a reef tank should be
a. | 70ºF | b. | 75ºF | c. | 80ºF | d. | 85+ºF |
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72.
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There is a large number of species of saltwater fish that the beginner should
avoid. All of the following are good reasons except
a. | not tolerant of poor water quality | b. | have special diet needs | c. | prone to
diseases | d. | all are good reasons |
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73.
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Doing a water change is different than replacing evaporated water by
a. | you must use new saltwater rather than freshwater | b. | it usually involves
less water in a water change than a top-off | c. | waste is also removed in a water
change | d. | you must use new saltwater rather than freshwater AND waste is also removed in a
water change |
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74.
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It is usually fine to buy a sea star that is missing a leg but not one
a. | with other sorts of damage or growths | b. | missing two legs | c. | that will change
your pH | d. | missing two legs AND that will change your pH |
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75.
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Tridcana clams feed mostly by
a. | eating fish | b. | by photosynthesis with algae in their
tissues | c. | filter feeding | d. | the same flakes as the
fish |
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