Osteichthyes (Bony Fish 1)

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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


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