Fishes of the World |
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Výsledky 1 - 3 z 63.
Strana 140
Most species are passive stingers ( e . g . , Noturus ) , and presumably the toxicity
of their stings has developed as a protective device in response to predation
pressure ( Birkhead , 1972 ) . Some , such as Heteropneustes fossilis of India ...
Most species are passive stingers ( e . g . , Noturus ) , and presumably the toxicity
of their stings has developed as a protective device in response to predation
pressure ( Birkhead , 1972 ) . Some , such as Heteropneustes fossilis of India ...
Strana 249
Teeth small or absent ; lateral line well developed to absent ; usually four or five (
rarely three ) branchiostegal rays ; gills comblike ; postcleithrum present .
Superfamily Aulostomoidea . Anterior four vertebrae elongate ; three median ,
well ...
Teeth small or absent ; lateral line well developed to absent ; usually four or five (
rarely three ) branchiostegal rays ; gills comblike ; postcleithrum present .
Superfamily Aulostomoidea . Anterior four vertebrae elongate ; three median ,
well ...
Strana 287
SUBFAMILY PERCINAE . Anteriormost interhaemal bone greatly enlarged ; anal
spines usually well developed ; lateral line usually not extending onto tail . Six
genera with 137 species . TRIBE PERCINI . Preopercle strongly serrate ; usually
...
SUBFAMILY PERCINAE . Anteriormost interhaemal bone greatly enlarged ; anal
spines usually well developed ; lateral line usually not extending onto tail . Six
genera with 137 species . TRIBE PERCINI . Preopercle strongly serrate ; usually
...
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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