Osteichthyes (Bony Fish 1)
What does Osteichthyes mean...
"bony fish"
How is the head capsule of a modern fish different its ancestors?
Ancestor fish: fewer bones and the bones are bigger Modern fish: has smaller bones and more bones
fastest fish
black marlin
relatively large organ olf elephant nose fish
brain
tail fin
caudal fin
concave portion of vertebrae
centrum
type of scale with fine teeth along edge
ctenoid
scale with rounded perimeter
cycloid
poisonous fish
death puffer or maki- maki
Scales grows out of what?
dermis
most shocking fish in the world
electric eel
What fish has the most massive brain relative to its body size?
elephant nose fish
smartest fish
elephant nose fish
covers scales
epidermis
the first vertebrate animals
fish
Cyloid Scales
flexable, translucent, rounded scales, has rings
this fish has a larger lower lobe on its caudal fin
flying fish
What do fish use electricity for?
for communication, for echolocation, for defense and even for hunting
Ctenoid Scales
has a set of fine teeth along the posterior edge
equal lobes
homocercal
reason for an assymetrical tail
lift
makes up 70% of a salmons weight
muscle
makes muscle red
myoglobin
form tube for spinal cord
neural arches
How many vertebrae do most fish have per body segment?
one
a paired fin
pectoral
flexible support for fins
rays
How is white muscle different from red muscle?
red muscle has plenty of myoglobin present and white has very little
reflect the history of a fish's life
scales
What are myomeres?
sheets of muscle
source of beluga caviar
sturgeon
give fish buoyancy
swim bladder
What is the relationship between fish diversity and latitude?
the lower the latitude the greater diversity
Modified Scales
armor plated, spines, scalpel
Describe reproduction in Poecilia formosa.
as an entirely female species, reproduction is by means of parthenogenetic clones. However, in order to stimulate the reproductive process, these female Mollies need to mate with a male, obviously one of a different species as there are no male Mollies
What is the record for caviar from a single sturgeon?
245 kg (540 lb)
How fast is the Black Marlin?
86 mph
How are ctenoid scales different from cycloid scales?
Ctenoid has a set of fine teeth along the perimeter of the scales and Cycloid are rounded along the perimeter of the scales
What is the class of the bony fish?
Osteichthyes
Name the paired fins
Pectoral Fins
Describe the fin rays of a bony fish.
they are inflexible, unbranched and unsegmented
Heterocercal fins
when the tail fin is asymmetrical (cartilaginous fish)
Homocercal fins
when the tail fin is symmetrical (most bony fish)
the color of fast muscle
white
