Module 4: Inroduction to Fish Morphology and Taxonomic Tools for Species Identification

Taeniform

ribbon shaped

filiform

thread-like

Terminal mouth

fish mouth shape

superior type

fish mouth shape

Inferior mouth

fish mouth shape

Lateral mouth

beak-like

tube-snout

c. pectoral fin

a fin located on the side of a fish body just behind the gill cover.
a. pelvic fin
b. anal fin
c. pectoral fin

a. pelvic fin

- inserted at the
sides of the body in varying positions, represents the hind limb
a. pelvic fin
b. anal fin
c. pectoral fin

a. anal fin

situated at the median line behind the vent/anus
a. anal fin
b. dorsal fin
c. caudal fin

b. dorsal fin

situated at the median line of the back
a. anal fin
b. dorsal fin
c. caudal fin

c. caudal fin

situated around the tail.
a. anal fin
b. dorsal fin
c. caudal fin

b. head

extends from the tip of the snout to the hind margin of the operculum.
a. tail
b. head
c. body

c. body

divided into trunk and tail region.
a. tail
b. head
c. body

c. single dorsal fin

what type of dorsal fin
a. 2 separate
b. continuous
c. single
d. sucking disc

b. continuous dorsal fin

what type of dorsal fin
a. 2 separate
b. continuous
c. single
d. sucking disc

a. 2 separate

what type of dorsal fin
a. 2 separate
b. continuous
c. single
d. sucking disc

c. truncate

what type of caudal fin
a. forked
b. pointed
c. truncate
d. emarginate
e. lunate
f. rounded

e. lunate

what type of caudal fin
a. forked
b. pointed
c. truncate
d. emarginate
e. lunate
f. rounded

f. rounded

what type of caudal fin
a. forked
b. pointed
c. truncate
d. emarginate
e. lunate
f. rounded

a. Finlets

are small non-retractable fins characteristic of fishes belonging to the family Scombridae.
a. Finlets
b. Adipose fin
c. Scutes

b. Adipose fin

probably aid in locomotion during larval stage.
a. Finlets
b. Adipose fin
c. Scutes

b. Lateral lines

located on either side of a fish's body is a series of small fluid- filled canals with pressure sensitive receptors used to pick up vibrations in the water.
a. Corselet
b. Lateral lines
c. keels
d. barbels

kingdom, phylum, class, order, family, genus, species

7 categories of classification

Vertebrates

animals with backbones

invertebrate

An animal without a backbone

Fish

•cold-blooded
animals, typically with:
•backbones
•gills
•fins

Fusiform

spindle shaped

Compressiform

these fish possess a laterally flattened body with a body depth typically at least 1/3 of the standard length

Sagittiform

shaped like an arrowhead

Box-like

Ostraciidae family

Globiform

puffer fish

Depressiform

flattened dorsoventrally

Anguilliform

shaped like an eel

Half-beak mouth

a. forked

what type of caudal fin
a. forked
b. pointed
c. truncate
d. emarginate
e. lunate
f. rounded

b. pointed

what type of caudal fin
a. forked
b. pointed
c. truncate
d. emarginate
e. lunate
f. rounded

d. emarginate

what type of caudal fin
a. forked
b. pointed
c. truncate
d. emarginate
e. lunate
f. rounded