Skeleton, Skin & Scales
Present in all chordate embryos and retained in some adult fishes.
What is the notochord?
Basic receptor for mechanoreception.
Hair cells
Primary organ for gas exchange
Gills
Four feeding categories.
What is Carnivore, Herbivore, Omnivore, Detritivore?
State where body weight equals buoyant force
What is Neutral Buoyancy?
Cells found within cartilage
What are chondrocytes?
Two major lateral line systems.
What is Cephalic and Lateral Line?
Blood and water move in opposite directions to maximize oxygen uptake.
What is Countercurrent Exchange?
Fish whose body fluids closely match seawater.
What is Osmoconformer (Hagfish)?
Two major swim bladder types
What is Physostomous and Physoclistous?
Scale type unique to Chondrichthyans
What are placoid scales?
Cranial nerve responsible for vision
What is Optic Nerve?
Two methods of ventilating gills
What is Branchial Pumping and Ram Ventilation?
How marine and freshwater teleosts differ in water balance.
what is Marine fish drink seawater and excrete salts; freshwater fish absorb ions and excrete dilute urine?
Ratio describing inertial vs viscous forces in water
What is Reynolds Number?
Three major skull components.
What is Chondrocranium, Splanchnocranium, Dermatocranium?
Three major otoliths in teleost fishes
What is Lapillus, Sagitta, and Asteriscus?
Four chambers of the fish heart
What is Sinus Venosus, Atrium, Ventricle, Bulbus Arteriosus?
Specialized gill cells responsible for ion transport
What is Ionocytes (Chloride Cells)?
Two major swimming modes.
What is BCF (Body-Caudal Fin) and MPF (Median-Paired Fin)?
Four major caudal fin types.
What is Heterocercal, Abbreviated Heterocercal, Homocercal, Diphycercal ?
Difference between ampullary and tuberous receptors
What is Ampullary = passive electroreception; Tuberous = active electroreception?
Six factors affecting oxygen requirements
What is Life Stage, Body Size, Activity, Temperature, Dissolved Oxygen, Feeding?
Hormones controlling osmoregulation in diadromous fishes
What is Cortisol and Prolactin?
Compare oviparity, ovoviviparity, and viviparity.
What is eggs outside body, eggs retained inside body, and live-bearing with maternal support?