Fun Trivia » Animals » Fish » Freshwater Fish

The Bow River in Alberta is a popular spot for catching both brown trout and rainbow trout. Although the average size of these fish caught in the Bow River is 16-18 inches (40.6 cm - 45.7 cm), some truly large specimens are regularly caught. These larger ones can easily exceed 24-26 inches (61 cm - 66 cm). Those are big fish! Difficulty: Easy.

 

Prince Edward Island, Saskatchewan , Manitoba

The zander looks like the offspring of a pike and a perch but is not related to either species. It was introduced into British waters in the 1960's. It flourished in the lowland waters of Great Britain due to the slow flowing nature of the lowland rivers. While zander are young they hunt in packs. The zander becomes solitary upon reaching maturity. Difficulty: Hard.

 

Rudd, Tench, Barbel

Minnows need clean water over a sandy or gravely riverbed. During the mating season the male will develop a reddish belly. This is to attract the female. Difficulty: Hard.

 

Trout, Dace, Roach

Aquarium strains of both Platies and Swordtails are hybrids among several Mexican Xiphophorus species, and will even hybridize with one another. "Sunset" Gouramis are not selections of one species, but hybrids between two Colisa species. Green Tiger Barbs, however, are "melanistic" mutations of the species Puntius tetrazonus. Their genes merely code for some extra black coloring, which gives them their green iridescence. Difficulty: Hard.

 

the "Sunset" Platy., the Red Swordtail., the "Sunset" Gourami.

During the Pleistocene Ice Age, as recently as 12,000 years ago, so much of earth's water was locked up in icecaps that the floor of the shallow South China Sea was exposed as a vast marshy grassland, drained by a great river system. Betta species spread into the surrounding upland rivers, then got isolated there as sea levels rose again. Difficulty: Hard.

 

because of continental drift., because of human interference., because of the late Cretaceous extinctions.

In many of these Neolamprologus species, the female is even smaller than the male, and it is only she who can get all the way into the shell, where she deposits her eggs. The male is larger, to defend the territory. Lake Nyasa is the alternate name for Lake Malawi. Lake Victoria, not in fact a rift lake, was the lake featured in the last sequences of "The African Queen." Difficulty: Hard.

 

Lake Victoria., Lake Malawi., Lake Nyasa.

No vertebrate can digest cellulose or lignin on its own. Panaque species have symbiotic gut bacteria, first identified in the 1990s,that help the fish digest the splinters of sunken wood it likes to gnaw on. Difficulty: Hard.

 

Corydoras species, Clarias species, Otocinclus species

This species can grow up to 50cm (around 20 in) in length and has strong jaws and teeth. The red-bellied piranha is considered the most ferocious. Difficulty: Hard.

 

Red-eye, Sharp-snouted, Black-tailed

The roach is the most common freshwater fish and can be found all over Great Britain. It can be found in canals, rivers, lakes and reservoirs. Roach can live up to an age of 20 years. It can take up to a decade for the roach to reach a pound in weight. Young roach tend to form in schools, while the larger roach will be on the fringes of the school. Difficulty: Hard.

 

Grass carp, Pike, Sea Trout

Leather carp grow to around the same size as a common carp and can become quite tame. Some will even eat out of your hand. They can live in moving or still water, eating mainly insects and sucking algae. All carp have 4 barbules at the side of the mouth. Difficulty: Hard.

 

Common carp, Mirror carp, Grass carp

The carbonate in the gravel reacts with the acid of vinegar to produce bubbles of carbon dioxide. By a similar reaction of carbonate and (citric) acid, CO2 fizzes in your Alka-Seltzer! Carbonates would slowly dissolve out of this gravel and raise alkalinity and the pH in your aquarium, if you used it. (Hydrogen sulfide is produced quite differently, by anaerobic bacteria in pockets of very low oxygen.) Difficulty: Hard.

 

oxygen., nitrogen., hydrogen sulfide.

Biofilm covers every underwater surface. Besides algae, the biofilm community includes bacteria, yeasts and other fungi, diatoms, many kinds of single-celled protists, and minute grazing animals like rotifers and nematode worms. By contrast, the plankton community is free-swimming and drifts with water currents. Both biofilm and plankton are present in your aquarium. Detritus is merely loose decaying organic material. Difficulty: Hard.

 

the microscopic plankton., the nitrifying bacteria., organic detritus.

The pigment-carrying structures are called "chromatophores." Reflective guanine crystals by themselves are responsible for silver and white. The changeable, "shot" colors of blue and green, also familiar from some tropical butterflies, demonstrate the "Tyndall effect" named for the British physicist who first gave a satisfactory explanation of it. Difficulty: Hard.

 

red and gold., silver and white., olive, cream and brown.

The disease is still often called "Neon Tetra Disease" though other fishes, even some non-tetras, are also susceptible to this minute intracellular parasite. Its specific name "hyphessobryconis" refers to the Neon Tetra's genus and might have given you a clue. Difficulty: Hard.

 

Zebra Danios, Angelfish, Oscars

According to the magazine 'BassMasters', the Black Bass is what 65 percent of fisherman fish for. Difficulty: Hard.

 

Trout, Panfish, Other

They are confined to most of the rivers throughout South America. Difficulty: Easy.

 

North America, Australia, Africa

Canada is known for its many top muskie lakes. It is typical for muskie anglers to catch several a day in some lakes. Ontario is their primary home, where they live in the Lake of the Woods, Eagle Lake, Lac Seul and Georgian Bay in Lake Huron and many other smaller lakes. Muskie fishing is almost exclusively catch-and-release in Canada. Difficulty: Average.

 

Lunge fish, Musker, Lungie

Along with salmon, all the listed species are farmed in Great Britain. Aquaculture, or fish farming, makes up 60% of food exports from Scotland. Difficulty: Hard.

 

Brown trout, Rainbow trout, Arctic char

Bream are a fish which prefer moving waters but will be happy in a pond. Bronze bream have between 51 to 60 scales along the lateral line while silver bream have 44 to 48 scales. Difficulty: Hard.

 

Barbel, Bitterling, Bullhead

The "balance" refers to the plants' production of oxygen, which is respired by the fish, which in turn give off carbon dioxide, which the plants require for photosynthesis. Difficulty: Hard.

 

of the nitrogen cycle., of fish species in a harmonious community., between carnivores and herbivores.

Though the other fish are not all commonly bred in open pools, they are not notably fussy about the hardness or alkalinity of their water either. Cardinal Tetras, on the other hand, require extremely soft, acidic, tannin-loaded "blackwater." Most Cardinal Tetras on the U.S. market are still caught wild in the mid reaches of the Rio Negro. Difficulty: Hard.

 

Opaline Gouramis, Bettas, Tiger Barbs

I reckon that shoal is a fancy name for school! Difficulty: Hard.

 

herds, scams, shuns

Great Bear Lake has an area of over 12,000 square miles and a peak depth of 1460 feet (31080 sq km/445 m). It is the largest lake completely within Canada's borders and also the fourth largest lake in North America. Given its size, it is no wonder that some of the largest freshwater fish in Canada can be found here. A world rod and reel record was set in 1995 when a trophy lake trout weighing 32.65 kg (72 lb 0 oz) was caught in Great Bear Lake. Difficulty: Average.

 

Yukon Territory, Alberta, British Columbia

The barbel got its name from the Latin word "barba" which means beard. The barbel has two set of barbs next to its mouth which it uses to track down its meal. Its mouth is highly underslung allowing it to feed from rocky or gravel riverbeds. It is estimated that the barbel can live up to 30 years. Difficulty: Hard.

 

Perch, Chub, Grayling

Chub are a relative of the dace, and congregate in shoals. Although they prefer running water they have been introduced to some still waters. Difficulty: Hard.

 

Barbel, Gudgeon, Bleak

The two familiar Etroplus species are "Orange Chromides" and "Green Chromides." "Haplochromines" designate a species flock of African Rift Lake cichlids. Tilapia from the Nile are now widely aquacultured as food fish. And all the Geophagus "earth-eaters" come from the Neotropics. Difficulty: Hard.

 

"Haplochromines.", "Tilapia.", "Geophagus."

Though the current London Aquarium, across the River Thames from the Houses of Parliament, was opened in 1997, the first London Aquarium, opened in Regent's Park as an adjunct to the Zoological Gardens, which Londoners were quick to dub "The Zoo," was the first public aquarium anywhere. Within three years, however, P.T. Barnum had opened an aquarium in New York. In the age of steamships, Hamburg was always the main port of entry for tropical fishes imported into Germany. Difficulty: Hard.

 

Paris., New York., Hamburg.

The Konrad brothers each caught fish from Lake Diefenbaker in the early 2000s that weighed over 43 pounds (19.5 kg). Although the International Game Fish Association (IGFA), the angling world's record- and ethics-keeping body recognized each catch as a world record at the time, there was some controversy because of the nature of the fish. Most lake trout are smaller than those caught by the twins. The issue is that the lake trout in Lake Diefenbaker were accidentally released from a fish farm where they had been genetically modified to grow larger. The fish are sterile, so all energy that would normally go towards reproduction is used for growth. The IGFA still recognized the records that will be unlikely to be broken unless another large lake trout is caught on Lake Diefenbaker. Difficulty: Hard.

 

More sunlight in the area means an abundance of natural food, No predators in the lake so the trout grow much larger than normal, Locals prepare a secret recipe and feed the fish twice daily

The tench was given the name "the doctor fish" because, according to folklore, the slime from the tench cured any sick fish that rubbed against it. The slime actually protects the tench as it swims in heavy plant life. The golden version of the tench is more commonly found in garden ponds as an ornamental fish. Difficulty: Hard.

 

Pike, Stickleback, Orfe

Fish eggs or snail eggs may be a clear golden color, and you may detect the dark developing snail or the eyes of the larval fry within each egg, but unlike fish eggs, snail eggs are deposited in a mass that's encased in jelly. Difficulty: Hard.

 

they're scattered singly or in pairs over the leaf., you can see little black dots inside., they're a clear golden color.

When you're less rushed, you'll remember that the operculum is the name for the gillcover. The "little lid" is most apposite, don't you agree? Difficulty: Hard.

 

"throat teeth.", "sawtooth edge.", "working jawbone."

The operculum is the gill-cover. Fishes have no "opercular" fins. The caudal fin is the tailfin. The ventral fins are paired fins down by the vent. The gourami species name Trichogaster trichopterus refers to these "thread fins." Difficulty: Hard.

 

pectoral fins., caudal fins., opercular fins.

Though a new aquarium should be innoculated with nitrifying bacteria to start the "nitrogen cycle," which converts ammonia to harmless nitrate, "fishless cycling" substitutes small doses of bottled ammonia for the ammonia excreted by a few hardy "starter" fish, to get the nitrogen cycle going in a more humane way. Difficulty: Hard.

 

innoculating a new aquarium with dirty gravel., clearing parasites by running an empty aquarium., innoculating a new aquarium with packaged bacteria.

The sucker can get up to 25 inches long. Difficulty: Hard.

 

Bass, Trout, Stickle Back Bass

The spectacle was laid on by local fishermen to 'entertain' their visitor and is not representative of piranha behavior. They normally only attack animals which are already dead or dying and some are vegetarian. Difficulty: Hard.

 

Abraham Lincoln, Woodrow Wilson, Bill Clinton

Yellow perch is a freshwater fish that can be found in many areas in North America. The fish is often sought by anglers who enjoy eating their catch because of its mild flavour and relative ease in catching. Yellow perch have been commercially harvested in the Great Lakes using a variety of nets. This is an important economic industry in Canada. In an estimate from 2002, it was found that the yellow perch catch in the Great Lakes was 3,622 tons with a value of $16.7 million. Difficulty: Hard.

 

Lake Ontario, Lake Huron, Lake Superior

The stickleback has the nickname "Tiddler" or "Sprick". It gets its name from the three spikes on the top of its body where the dorsal fin is located in many fish species. The male stickleback will build a nest for the female to lay her eggs. After the male has fertilised the eggs he will stay at the nest to guard it. Difficulty: Average.

 

Arctic char, Sturgeon, Grass carp

Eels return to the Sargasso sea to spawn. The eggs hatch into larvae called Leptocephalli which slowly drift towards Europe. Changing into small eels (elvers), they then move inland along the rivers and across land to ponds where they live until maturity when the cycle begins again.
Difficulty: Easy.

 

Pike, Roach, Rudd

Lone Tiger Barbs may harass their tankmates. Tiger Barbs kept in a group of six or more will concentrate their energies on their conspecifics. Their appetite for the fast-growing floating weed, duckweed, might be counted a virtue! Difficulty: Hard.

 

because of their territorial requirements., because of their taste for other fishes' skin slime., because of their insatiable appetite for duckweed.

The walleye is also colloquially known as the pickerel in many areas of Canada, but this fish is not related to true pickerels. Walleyes get their name from their large, front-facing eyes that appear as though they are staring ahead at a wall. The orientation of the eyes gives anglers an advantage in the dark because the eyes have a light-gathering layer that allows them to see in darker water. This layer causes a reflection, similar to that seen in many nocturnal animals, that anglers can see from above when they fish at night. Difficulty: Hard.

 

Bullhead, Roundeye , Yellow steeleye