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PLENTY OF FISH IN THE SEA - Coggle Diagram
PLENTY OF FISH IN THE SEA
What's fish
The most iconic residents of the world ocean and other aquatic systems.
They are known for their scales, gills,and fins.
Classifying Fishes
Jewless fishes
Hagfish and lampreys are some of the most primitive fishes.
Parasite on other vertebrates by using their mouth parts to attach to the host.
Cartilaginous Fishes
Shank and rays are also
elasmobranch cartilaginous fishes
Lobe - finned fishes
The lobe-finned fishes,classified as
Sarcopterygii
,include
lungfish and coelocanths
.
Primitive Ray-finned fishes
The relationship between
the fishes in the this group is not fully understood.
Modern Bony Fishes
The modern bony fishes are classified in the Division
Teleostei.
STRUCTURE & FUNCTION
External Anatomy of Fishes
•
Anatomy
is the study of an
organism’s structures.
Fins
Most fish have two kinds of fins
median and paired.
Caudal (Tail) Fin
The
caudal fin is known commonly as the
tail fin.
It is the primary appendage used for locomotion in many fishes.
Paired Fins
Fish have two sets of paired fins:
pectoral and pelvic.
The Mouth
The mouth is at the front, or anterior end, of the fish.
Eyes
Fish eyes are usually placed just dorsal of and above the mouth.
STRUCTURE & FUNCTION
Gills and Oxygen Exchange
Gills are composed of a gill arch, gill filaments, and gill rakers.
Ampullary receptors
Lateral line
The lateral line is used to help fishes sense vibrations in the water.
