No Swag Stuff Flashcards
Scales
The body covering of most fish
Scales merely grow in what?
Proportion
How can you estimate the age of some fish
By counting their scale rings
Mucus
Special glands beneath the scales secrete slimy mucus that covers the exterior of the fish
Chromatophore
Branched cells responsible for producing some of the pigments that color fish. In some fish all the chromatophores produce the same color pigment
Some fish have the ability to alter what
The color and color pattern by rearranging the pigment in various chromatophores
Operculum
Covering for gills
Gills
The major organs of respiration
Gill rakers
A number of cartilage projections on the inner margin of the bill arch , prevent food and debris from passing over and clogging the gills
Female spawns
Lays the eggs
Milt
A milky fluid containing Sperm
Yolk
Embryo usually forms atop a ball of food material
Swim bladder
A thin walled sac in the body cavity that enables the fish to control its depth and to maintain that depth while swimming