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1. Most salmon are anadromous, which means what?
Answer: They migrate between salt and fresh water
Interesting Information:Most salmon live in fresh water during birth, mating and death but live out most of their adult life in the salt water ocean. The term for this is anadromous, but there are salmon that live their whole lives in fresh water.
Difficulty: Hard.
From Quiz: Gone Fishing
Some incorrect choices:
They give birth to live young, They are both male and female, They eat only mollusks
2. This fish is born in the rivers of Europe. When it's almost mature, it migrates to the ocean to mate. After the deed it swims back to its native river, where the female deposits her eggs. Which fish is this?
Answer: Atlantic salmon
Interesting Information:The Atlantic salmon (Salmo salar) can grow up to 75 cm length and about 4.5 kg weight. Young salmon start hunting after a few days and, as they grow bigger, they move towards the sea. Most Atlantic salmon that go out to sea, wind up to the west of Greenland.
When the Atlantic salmon became threatened by overfishing, various farmers started aquaculture of salmon. The salmon from large aquafarms are usually fed more shrimps than the wild species consume, in order to obtain the delicate pink colour of the flesh.
The bigmouth buffalo is a pure freshwater fish from North America. It can reach 1.2 m length and 29 kg weight.
The armoured sea robin is a bottom dwelling fish, living at the bottom of tropical seas up to 200 metres in depth.
The eeltail catfish is a fish with several barbels at the head, and a serpent-like tail. It lives mostly in the Indian and Pacific Ocean.
Difficulty: Very Easy.
From Quiz: Fish
Some incorrect choices:
Bigmouth buffalo, Armoured sea robin, Eeltail catfish
3. Scientists recently announced that the opah, a commercial fish that is increasing in popularity, is actually the world's first documented warm-blooded fish. What is the scientific name for the opah?
Answer: Lampris guttatus
Interesting Information:It always been believed that all fish are cold-blooded animals. Enter the opah. In May 2015 scientists rocked our idea of what it means to be warm-blooded when they announced that this amazing fish is the world's first warm-blooded fish. According to NOAA, because opah are not a major seafood species and they live in the deep ocean, scientists know little about their biology and ecology and had assumed them to be similar to other Pacific Ocean pelagic fish. Now nearly everything we know about the opah is up for reinvestigation.
The scientific name for the opah is Lampris guttatus. Holacanthus bermudensis is commonly known as the blue angelfish. Carcharodon carcharias is the great white shark and Carssius auratus is a goldfish. The pelagic zone, also called the open-ocean zone, is from the Greek (pélagos) meaning "open sea".
Difficulty: Hard.
From Quiz: A Fish Called Opah
Some incorrect choices:
Holacanthus bermudensis, Carcharodon carcharias, Carassius auratus
4. How many eggs can a salmon lay in its lifetime?
Answer: 7,000 eggs
Interesting Information:A Chinook salmon can lay the most eggs. This species of salmon is the largest type of Pacific salmon and is known as the Chinook 'king' salmon, sometimes even just the king salmon. This fish is a prized catch for most fishermen due to its size (22 to 50 inches)!
Difficulty: Hard.
From Quiz: A Hook's Well Lost To Catch A Salmon
Some incorrect choices:
500 eggs, 1,000 eggs, 10,000 eggs
5. The films begins with a couple of anemonefish finding a new anemone to live in. The striped fish finally find a perfect spot with an ocean view, the perfect place to raise a family.
By what other, more common name is the anemonefish known?
Answer: Clownfish
Interesting Information:Though most often the clownfish is viewed as an orange fish with white and black bars, there are actually over 30 species of clownfish recognized. The designs vary in color and pattern, but the orange clownfish is the most widely recognized species (also the species of Marlin, Nemo, and Coral in the film).
Difficulty: Easy.
From Quiz: The Fish of "Finding Nemo"
Some incorrect choices:
Angelfish, Parrotfish, Catfish
6. Barracuda often swim towards a person in the water. Why is it thought that they do that?
Answer: They think you are a large predator and a source of scraps
Interesting Information:Barracuda tend to swim towards divers and swimmers as they think that the swimmer is a large predator and that scraps of food will be left after a kill. They don't often attack humans unless the water is murky or they are attracted in some way.
Difficulty: Hard.
From Quiz: Barracuda
Some incorrect choices:
They like to frighten swimmers , They are drawn to the coconut oil worn by tourists, They are drawn to the carbon dioxide in your breath
7. We'll start off with a fish that is extremely common in aquariums. This fish is a small member of the carp family. It includes koi, bubble-eye, and black moor varieties. What commonly named fish is this?
Answer: Gold
Interesting Information:Goldfish are the most common types of aquarium dwellers. Although goldfish can be a golden color, they are not always this way. They can range in color anywhere from white to black. Black moors are also called telescope fish, so-called for the protruding eyes. Bubble-eyes also have protruding eyes; sacs filled with liquid! They can pop, so you need to be careful if you have some in your tank. Other goldfish include: comet, fantail, pompom, and veiltail.
Difficulty: Average.
From Quiz: Red Fish, Blue Fish
8. Which genus do most clownfish belong to?
Answer: Amphiprion
Interesting Information:27 species of clownfish belong to the genus Amphiprion. The other 1 species belongs to the genus Premnas.
Difficulty: Hard.
From Quiz: Captivating Clownfish
Some incorrect choices:
Acanthurus, Zebrasoma, Naso
9. There are two types of paddlefish in the world;
Polydon spathula, the American paddlefish, and also Psephurus gladius, that inhabits the Yangtze (Chang) River, which is the:
Answer: Chinese paddlefish
Interesting Information:Chinese paddlefish is correct, the others don't even exist. The Chinese paddlefish differs slightly from the American in that it has more triangular, pointy snout than the nicely rounded one of Polydon spathula, and it also grows much bigger than its American relative.
Sadly, scientists declared the Chinese paddlefish extinct on September 15, 2019. Overfishing, as well as habitat loss, led to its demise.
Difficulty: Easy.
From Quiz: Paddlefish Panorama (a WHAT fish?)
Some incorrect choices:
Australian paddlefish, Mexican paddlefish, European paddlefish
10. This fish is commonly called either a reef triggerfish or a Picasso triggerfish. What do they call it in Hawaii?
Answer: Humuhumu nukunuku apua'a
Interesting Information:The Picasso triggerfish has a truly unique look, and can be found on Hawaiian reefs (and Hawaiian hats, Hawaiian t-shirts, Hawaiian coffee mugs . . .). The other names are Hawaiian for: moa = trunkfish, kokala = porcupine pufferfish, and nunu = trumpetfish.
Difficulty: Hard.
From Quiz: Fish of the United States
Some incorrect choices:
Moa, Kokala, Nunu
11. Which fish is best suited to living in a community tank?
Answer: Angelfish (Pterophyllum scalare)
Interesting Information:The Angelfish (Pterophyllum scalare)is a carnivorous species that is well suited to community tanks due to their docile behavior.
Difficulty: Hard.
From Quiz: Catch This Fish
Some incorrect choices:
Tiger barb (Barbus tetrazona), Convict (Cichlasoma nigrofasciatum), Leaf fish (Monocirrhus palyacanthus)
12. Which aquarium resident was the first fish to get its entire genome mapped?
Answer: Zebra Danio
Interesting Information:The Zebra Danio is widely studied to unravel vertebrate development. In a segment of "Scientific American Frontiers," actor Alan Alda visited a lab with 150,000 Zebra Danios to discuss the gene-sequencing project. Endler's Livebearer is a close relative of the familiar guppy.
Difficulty: Hard.
From Quiz: Freshwater Fish and Fishkeeping
Some incorrect choices:
Guppy, Endler's Livebearer, Tiger Barb
13. This basslet, which can also be called a royal gramma, has a purple front and a golden-yellow back. It is very common in the Caribbean. Which fish is this?
Answer: fairy basslet
Interesting Information:The fairy basslet will sometimes swim upside down, by raising its stomach to the ceiling of a cave or ledge.
Difficulty: Hard.
From Quiz: Fish of the Reefs
Some incorrect choices:
yellowcheek basslet, candy basslet, threeline basslet
14. What is the world's largest fish?
Answer: Whale Shark
Interesting Information:A whale shark can exceed 10 tons in weight.
Difficulty: Easy.
From Quiz: North American Fish
Some incorrect choices:
Sawfish, Barracuda, Freshwater Catfish
15. A 'brownie' is what kind of fish?
Answer: Smallmouth bass
Interesting Information:There are 9 genera and 30 species in the bass family.
Difficulty: Hard.
From Quiz: Fish Tales 1
Some incorrect choices:
Catfish, Sunfish, Shark
16. This fish is known as being an effective insectivore in areas known for disease spread by mosquitoes. In fact many people who don't even own an aquarium know of it.
Answer: Guppy
Interesting Information:The guppy is also known as the millions fish. It was first discovered in Trinidad in 1866.
Difficulty: Hard.
From Quiz: Aquarium Fish
Some incorrect choices:
Swordfish, Tinfoil Barb, Corydoras Panda
17. On which continent is the electric eel native?
Answer: South America
Interesting Information:They can be found in the Amazon basin region.
Difficulty: Hard.
From Quiz: Electric Eels
Some incorrect choices:
North America, Africa, Australia
18. What is the largest species of Pacific Salmon?
Answer: chinook
Interesting Information:The chinook, or king salmon, is the largest. Specimens over 100 pounds have been recorded.
Difficulty: Hard.
From Quiz: Pacific Salmon
Some incorrect choices:
silver, dog, sockeye
19. About how large is an adult European anchovy?
Answer: 13-15 cm (5-6 in)
Interesting Information:Different kinds of anchovy come in different sizes, with some as small as 2 cm and some as large as 40 cm when they are adults. European anchovies are on the smaller end of that scale, although the largest recorded specimen is over 20 cm (8 in).
If your mental image of an anchovy is smaller than this, it might be that you are thinking of the fillets that are used as a pizza topping; these are obviously smaller, since the head and tail portions of the fish are not included.
Difficulty: Hard.
From Quiz: Hold the Anchovies!
Some incorrect choices:
2-3 cm (1 in), 35-40 cm (14-16 in), 95-100 cm (37-39 in)
20. The body on a yellowfin tuna is dark blue and silver. The bright yellow dorsal fin, anal fin and finlets are how it earned its name. How many years is the average life span?
Answer: 5-9 years
Interesting Information:Yellowfin tuna can reach up to 94 inches (2.4 meters) in length and 440lb (200kg).
Many sport fishermen prize the yellowfin hunt due to their strength and speed. Some of the places where hunting trips can be organized are California, Mexico, Hawaii, and the Gulf of Mexico.
Difficulty: Average.
From Quiz: Tuna: Not Just Canned
Some incorrect choices:
1-2 years, 15-18 years, 20-25 years
21. This freshwater fish, with silver-grey belly and brownish back, is native to Europe (from Norway down to Spain). Which yummy fish is this?
Answer: Brown trout
Interesting Information:The brown trout (Salmo trutta) is a medium sized fish, growing up to 1 metre length and about 20 kg weight. Some brown trout stay all their life in the same river, some swim towards a lake, and some go up to sea to mate.
The chain pickerel is a freshwater fish living in the southern part of the USA.
The goblin shark is a type of shark found in deeper waters (100 meters or a bit more) near Mexico, Brazil, France, Senegal, South-Africa and Japan.
Jewel cichlids are very brightly coloured fish from Africa. Most of the West-African species live in freshwater or brackish water.
Difficulty: Easy.
From Quiz: Fish
Some incorrect choices:
Chain pickerel, Goblin shark, Jewel cichlid
22. To which genus do sailfish belong?
Answer: Istiophorus
Interesting Information:A sailfish is one of the four genera belonging to the Istiophoridae family in the Perciformes order. The sailfish's genus is Istiophorus.
Difficulty: Hard.
From Quiz: Sailfish takes a Selfie
Some incorrect choices:
Istiompax, Tetrapturus, Xiphias
23. Not long after finding a new home, Marlin and Coral were attacked by a fearsome predator. The long, eel-like fish with an underbite and extremely sharp teeth ate Coral and all but one little egg... Nemo.
What kind of fish is described?
Answer: Barracuda
Interesting Information:Of the 27 species of barracuda, the great barracuda is perhaps the most easily recognized. Barracudas are scavenging fish, and therefore have been known to bite humans. They view the human as a predator, following them for food. That's when they bite (thinking they're going to get a morsel of food falling from the mouth).
Difficulty: Average.
From Quiz: The Fish of "Finding Nemo"
Some incorrect choices:
Piranha, Swordfish, Lionfish
24. What do barracuda eat?
Answer: fish
Interesting Information:Barracuda eat other smaller fish, such as mullet and sardines, although they will attack larger prey, which they tear chunks from, rather than swallowing whole. They do not prey on human beings, coral, turtles or birds.
Difficulty: Very Easy.
From Quiz: Barracuda
Some incorrect choices:
coral, birds, turtles
25. This grey-green fish lives near the coast. It feeds on plankton and various small invertebrates. The body is elongated with golden yellow horizontal lines. What is it called?
Answer: Bogue
Interesting Information:Bogue (boops boops) is 10-30 cm long.
Vogue is the prevailing fashion, rogue is a dishonest or unprincipled man and pogue is a pejorative military slang.
Difficulty: Hard.
From Quiz: Mediterranean - Big Fish, Little Fish
Some incorrect choices:
Rogue, Vogue, Pogue
26. From the family Mormyridae, what is the collective name for this family of fish that has an unusually enlarged cerebellum, thereby giving them a brain to body size ratio similar to humans? Remember, this fish never forgets.
Answer: freshwater elephantfish
Interesting Information:Elephantfish can generate weak electrical fields to help sense their surroundings in muddy river water. Some species also have enlarged snouts to help them find food in muddy African river bottoms, further leading to the moniker.
Difficulty: Easy.
From Quiz: Trout of Africa
Some incorrect choices:
nurse shark, hyenafish, Congo trout
27. Where would you normally go diving to see a clownfish?
Answer: Coral Reefs
Interesting Information: Some people are even lucky enough to own their own marine aquarium with clownfish. Clownfish are a very popular choice to keep because they are very hardy, meaning more easy to keep then other fish species.
Difficulty: Easy.
From Quiz: Captivating Clownfish
Some incorrect choices:
Open Ocean, Rivers and Estuaries, Sea Floor
28. What is another name for the greater spotted dogfish?
Answer: Bull huss
Interesting Information:The 'bull huss' is the other given name to the greater spotted dogfish. There are other names too, such as nursehound.
Difficulty: Hard.
From Quiz: The Greater & Lesser Spotted Dogfish
Some incorrect choices:
Killer whale, Lear sally, Lesser spotted dogfish
29. Many do not realize that this species, the largest in the family, is actually a sunfish. It is one of the most sought after game fish in the U.S. and has many colloquial nicknames such as lineside bass and green trout.
Answer: largemouth bass
Interesting Information:One of the most exciting sights in sport has to be a 4-6 pound largemouth leaping out of the water, angrily trying to toss the hook. The largemouth can be identified from other similar species by the fact that their upper jaws reach far beyond the rear margin of the eye.
Difficulty: Hard.
From Quiz: Here Comes The Sunfish
Some incorrect choices:
brown trout, green sunfish, rock bass
30. This bizarre-looking fish can be found all up and down the Atlantic seaboard. What is the common name for the Prionotus evolans?
Answer: Striped searobin
Interesting Information:These odd-looking fish are found on sandy seabottoms, and love to feed on mollusks and crustaceans. Come to think of it, I love to eat mollusks and crustaceans too!
Difficulty: Hard.
From Quiz: Fish of the United States
Some incorrect choices:
Flounder, Hickory shad, Alewife
31. This fish is found in marine tanks.
Answer: Humbug (Dascyllus aruanus)
Interesting Information:The Humbug (Dascyllus aruanus) is a small black-and-white striped marine fish. The elephant, koi and discus fish are freshwater and tropical fish.
Difficulty: Hard.
From Quiz: Catch This Fish
Some incorrect choices:
Elephant (Gnathonemus petersi), Koi (Cyprinus carpio), Discus (Symphysodon var.)
32. Only a few freshwater fishes bear fully-formed young. Besides the familiar guppy, platy and molly, livebearers include
Answer: Gambusia, the mosquitofish.
Interesting Information:The rapidly reproducing Gambusia affinis is still being introduced in waters where it's not a native, to control mosquitoes-- sometimes with devastating results to rare endemic fishes. "Barbus viviparus" was a biologist's gaffe; the fry in its body cavity had been a last meal! All of our native darters are oviparous ("egg-layers").
Difficulty: Hard.
From Quiz: Freshwater Fish and Fishkeeping
Some incorrect choices:
Barbus viviparus., Channa, the snakehead., several American darters.
33. This species of snapper is extremely common in Caribbean reefs. The silvery-white fish usually swim well above reefs, either alone or in schools. They have a vividly colored stripe across their body. Which species is this?
Answer: yellowtail snapper
Interesting Information:The yellowtail snapper is not afraid of divers; the fish often approach them.
Difficulty: Hard.
From Quiz: Fish of the Reefs
Some incorrect choices:
blackfin snapper, lane snapper, gray snapper
34. Which fish often stalks other fish from beneath logs and other protected areas?
Answer: Pike
Interesting Information:The spoon-shaped lures that fishermen use to attract the larger pikes are believed to move and glitter like the living prey.
Difficulty: Average.
From Quiz: North American Fish
Some incorrect choices:
Minnow, Trout, Carp
35. Small mouth bass build nests. Who builds them - the male or female?
Answer: me
Interesting Information:They are found from Lake Champlain southwest to the Appalachian region.
Difficulty: Average.
From Quiz: Fish Tales 1
36. How big can the electric eel get?
Answer: 8 feet
Interesting Information:A very large fish!
Difficulty: Hard.
From Quiz: Electric Eels
Some incorrect choices:
2 feet, 4 feet, 6 feet
37. This Pacific salmon, when it occurs in lakes, is known as a kokanee.
Answer: sockeye
Interesting Information:Sockeye run up the rivers of Alaska in large numbers where they spawn, becoming prey for bears along the way.
Difficulty: Hard.
From Quiz: Pacific Salmon
Some incorrect choices:
king, coho, jack
38. Which ocean fish is the second largest fish in the world?
Answer: Basking shark
Interesting Information:The vulnerable basking shark, at over 20,000 pounds, is the second biggest fish in the ocean. They swim with their large mouths wide open in order to feed on plankton. Because of over-fishing, many of the basking shark populations are now endangered.
Difficulty: Hard.
From Quiz: Gone Fishing
Some incorrect choices:
Swordfish, Marlin, Orca
39. Sneaking into this quiz like a unwanted guest in a vending machine, what is a blue glaucus?
Answer: a sea slug
Interesting Information:One kind of slug (counterfeit coin) really could get into a vending machine. We hope the blue glaucus (Glaucus Atlanticus) never does, as it carries toxic cells within that can deliver a painful sting to a human who touches it. It gets these venomous cells from swallowing bits of Portugese man o'war and jellyfish which it eats. Somehow, it's able to store the poison in its own body and then use it to defend against predators. This small sea slug looks like some kind of tiny winged lizard-dragon, with pointed dark blue appendages (cerata) fanning out from front, middle and behind. Its maximum length is three to four centimeters. Its back is silver/grey and its ventral side (stomach) is bluish. It floats upside down on the ocean surface, and these colors provide camouflage against predators above and below. the blue glaucus is one of over 85,000 species in the phylum Mollusca.
Difficulty: Hard.
From Quiz: Something Fishy Here
Some incorrect choices:
a jellyfish, a sea snake, a whale
40. The Atlantic bluefin tuna is fished both commercially and by sport fisherman. From the list below can you identify one of the nicknames for this fish?
Answer: common tunny
Interesting Information:The Atlantic bluefin tuna was referred to as common tunny in the U.K., Australia and New Zealand before the more current "tuna".
Due to overfishing, in 2011 the Atlantic bluefin tuna was classed by the International Union for Conservation of Nature (IUCN) as an endangered species.
This tuna lives between 35 and 40 years, reaching a length of 6.6ft (2.0m) and 1,508lb (684kg).
Difficulty: Easy.
From Quiz: Tuna: Not Just Canned
Some incorrect choices:
betta, convict blenny, hamlet
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