Fish Part A Flashcards
What are their Kingdom, Phylum & Clade?
Animalia, Chordata, Craniata
What are the main types of fish?
Jawless, Cartilaginous, Ray & Lobe finned, *Armoured
Characteristics of chordates?
Notochord, Dorsal neural tube, Pharyngeal slits, Endostyle (filter feeding), Post -anal tail
What are the jawless vertebrates?
Lampreys
What are the jawed vertebrates?
Cartilaginous fish (sharks, rays)
What are the bony vertebrates?
Ray finned fish (most fish)
What are the lobe finned vertebrates?
Lungfishes, Tetrapods
What does ANAdromous mean?
Freshwater —- Estuaries —- Saltwater —– Freshwater
What does CATAdromous mean?
Saltwater —-Estuaries —- Freshwater
What does AMPHIdromous mean?
Estuary —- Saltwater —- Estuary —- Freshwater
What does POTAMOdromous mean?
Upstream —- Downstream
What does OCEANOdromous mean?
Saltwater
What are the 3 skin variations of fish?
Bone in dermis, Glands, Corneum
Stratum corneum developments?
Almost absent, unicellular
Different types of scales?
Placoid (Sharks), Cycloid & Ctenoid (bony fish), Ganoid (gars)
What are neuromasts?
Fluid filled pits (mechanical changes in water)
Describe lateral line system?
Orientate itself, sound waves, ampullae lorenzi (sharks)
What are the main internal organs of fish?
Air bladder, long kidney, gonad
What are the 3 types of reproduction?
Oviparous, Viviparous, Ovoviviparous
Oviparous?
Eggs laid outside body, case on floor, Whales
Viviparous?
Egg develops in mother, live young, Hammerheads
Ovoviviparous?
Egg hatches in uterus, Great white
What are the parts of the male repro system?
Gonads, accesory structures,
How does the male repro system function?
Sperm ampullae ripen —- sperm discharge —- ampullae reabsorbed —- some claspers
What are the parts of the female repro system?
Ovary & Oviduct closed, Oogenesis
