Ichthyology

Ichthyology correct answers branch of zoology devoted to the study of fish Encompasses fish management, genetics, limnology, and general ecology Taxonomy of a fish correct answers kingdom: animalia Phylum: chordata Subphylum: vertebrata (craniata) - Agnatha (no jaw) or gnathostoma (jawed) what is a fish? correct answers poikilothermic (cold-blooded, body temp matches environment), aquatic chordate w/ appendages (when present) developed as fins, whose chief respiratory organs are gills ...

WHAT IS A FISH? correct answers Unique and derived features, sometimes difficult to define. Generally... - Ectothermic (poikilothermic) vertebrates - Appendages as fins, not pentadactyl limbs - Gills throughout life - Live in water most of the time Fish is not a taxonomic ranking, convenient description for a diverse group of org. Polyphyletic group. Might as well be called the chordates. Diversity of fishes correct answers : Of the 55,000 spp. vertebrates, 28,000 are fish. More spp. tha...

GLOBIFORM correct answers FUSIFORM correct answers FOOTBALLS -Hydrodynamic -Fast swimmers: Sustained -Energetically costly -Thin caudal peduncles FINS: evenly spaced along body for energy conservation. PHYSICS: thickest cross-section (~.36 from nose) FILLIFORM correct answers LONG AND THIN DEPRESSIFORM correct answers DORSO-VENTRAL COMPRESSION -Skates/Rays/Anglers -Bottom dwellers (get out of the current) COMPRESSIFORM correct answers LATERAL COMPRESSION -Strong swimmers:No...