Ktatives of the clade/series comprise over 6500 species, a total that amounts to
ID: 252181 • Letter: K
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Ktatives of the clade/series comprise over 6500 species, a total that amounts to over known fishes and nearly % of all freshwater species of all a. Dipnoi d. Sarcopterygii Distribution Patterns of Freshwater Fish Families 35 36. 37. 38. 39 Centrarchidae (sunfishes) Cobitidae (loaches) Cyprinidae (minnows) Gymnotidae (knifefishes) Mormyridae (elephantfishes) B. Multiple Choice: Ecological Divisions of Freshwater Fishes 40. Saltwater dispersants are a. Freshwater fishes that are freshwater representatives of marine families b. Freshwater fishes that are diadromous and move between fresh and salt water c. Freshwater fishes generally incapable of dispersing long distances through salt water d. Euryhaline marine fishes that are primarily marine species capable of entering freshwater e. a and b 41. are species with little salt tolerance that are confined to freshwater ( (Ex.Cyprinidae). a. Primary division fishes b. Secondary division fishes c. Peripheral division fishes d. all of the above Multiple Choice: Evolution of Late Devonian Lobe-Finned Fishes and Amphibians 42. Late Devonian fossil taxa(-380 mya) and(-375 mya) have recently emerged as the fishes most closely related to tetrapods. a. Panderichthyidae Tiktaalik b. Urochordata... Cephalochordata c. Placodermiomorphi .. Acanthodii d.Explanation / Answer
34) c)-Ostariophysi is the second-largest superorder of fish. Members of this superorder are called ostariophysians. This diverse group contains almost 8,000 species, about 28% of known fish species in the world and 68% of freshwater species, and are present on all major continents except Antarctica. They have a number of common characteristics such as an alarm substance and a Weberian apparatus.
35) Centrarchidae-All are native only to North America.
36) Cobitidae-They occur throughout Eurasia and in Morocco, and inhabit riverine ecosystems.
37) Cyprinidae-Cyprinids are native to North America, Africa, and Eurasia.
38) Gymnotidae-The naked-back knifefishes are a family (Gymnotidae) of knifefishesfound only in fresh waters of Central America and South America.
39) Mormyridae-The family Mormyridae, sometimes called"elephantfish" (more properly freshwater elephantfish), are freshwater fish in the order Osteoglossiformes native to Africa.
40) e)-a and b
Salt water dispersants are species that spend much of their life history in fresh water but either can move through salt water themselves or have immediate ancestors that did so. Thus their distribution patterns are explained in part by movements through ocean. All species of this type in California are anandromous or had ancestors that were anandromous. Examples include rainbow trout, threespine stickleback, chinook salmon, and all lampreys.
41) d)-all the above (i.e primary, secondary and peripheral)
primary division fish families are those whose members have little salt tolerance and are confined to fresh waters. Salt water is a major barrier for them, and their distribution has not depended on passage through the sea. The salt tolerance of individual species within a family does vary, however.
Secondary division fresh water fish families are those whose members are usually confined to fresh water , but they have some salth tolerance and their distribution may reflect dispersal through coastal waters or across short distances of salt water. Some peripheral family members may be confined to fresh water and others may spend a considerable portion of their life cycle in fresh water, but they both are derived from marine ancestors who used the oceans as dispersal routes. Other peripheral division families are basically marine groups some of which enter fresh water.
42) c) placodermiomorphi….Acanthodii
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