Fishes of the World |
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Výsledky 1 - 3 z 70.
Strana 139
Within A . mexicanus there are eyed surface fish ( with relatively high genetic
variability ) and eyeless cave forms ( with relatively low genetic variability ) ; in at
least one cave the two forms interbreed ( Avise and Selander , 1972 ) .
Within A . mexicanus there are eyed surface fish ( with relatively high genetic
variability ) and eyeless cave forms ( with relatively low genetic variability ) ; in at
least one cave the two forms interbreed ( Avise and Selander , 1972 ) .
Strana 155
Villiform teeth present on the upper and lower jaws ; snout relatively short ; three
pectoral radials ( four in Sternopygus ) ; infraorbital bone series complete and
with an enlarged sensory canal . Five genera , Sternopygus , Archolaemus ...
Villiform teeth present on the upper and lower jaws ; snout relatively short ; three
pectoral radials ( four in Sternopygus ) ; infraorbital bone series complete and
with an enlarged sensory canal . Five genera , Sternopygus , Archolaemus ...
Strana 216
Scales small ( 70 – 91 along midline in two dwarf species and 107 – 148 in two
large species ) ; mouth opening relatively small , jaws varying in length from both
produced into long , slender beaks ( as in Scomberesox shown in figure ) to ...
Scales small ( 70 – 91 along midline in two dwarf species and 107 – 148 in two
large species ) ; mouth opening relatively small , jaws varying in length from both
produced into long , slender beaks ( as in Scomberesox shown in figure ) to ...
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Obsah
INTRODUCTION | 1 |
PHYLUM CHORDATA | 21 |
Subdivision Halecomorphi | 86 |
Autorské práva | |
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Časté výrazy a frázy
absent adipose fin adults Africa anal fin ANTARCTIC ARCTIC areas Atlantic Australia barbels body bone brackish branched branchiostegal rays Bull CAPRICORN caudal fin characters CIRCLE classification closely compressed continuous cycloid derived developed Distribution dorsal and anal dorsal fin eastern eight elongate EQUATOR extending eyes Family fin rays fishes five fossil four freshwater genera e.g. genus gill openings given gives head Indian known lack lateral line living lower Marine maxilla Maximum length mouth nine North occur oceans Order organ origin Pacific pairs pectoral fin pelvic fins placed plates present primarily primitive probably rarely recognized region relationships relatively Rosen scales seas separate seven short side similar single snout soft rays South America southern species spines SUBFAMILY Suborder swim bladder tail teeth teleosts Three genera TRIBE tropical usually vertebrae western Zealand Zool