fourth practical

Question 1

distinguishing characteristics of buffalos

Answer 1

deep, robust body
very long dorsal fin base with > or equal to 22 rays
symmetric subopercle

Question 2

characteristics of yellowfin shiner

Answer 2

terminal mouth
thick black stripe
sometimes faint caudal spot
more pointed snout

Question 3

characteristics of spottail shiner

Answer 3

subterminal mouth
large eye
body with little pigment or faint lateral stripe
large prominent caudal spot

Question 4

distinguishing characteristic of lake chubsucker

Answer 4

34-38 midlateral scales

Question 5

characteristics of santee chub

Answer 5

small maxillary barbel
mouth very subterminal
body more fusiform

Question 6

characteristic of whitefin shiner

Answer 6

no barbel
mouth slightly subterminal
taller body, compressed

Question 7

distinguishing characteristics of notchlip redhorse

Answer 7

body more robust
13 or less caudal peduncle scales
13 or more dorsal rays

Question 8

characteristics of warpaint shiner

Answer 8

thick bands of pigment on caudal and dorsal fins

mouth terminal, oblique

Question 9

characteristics of longnose dace

Answer 9

long snout; extends well past lower jaw
very fine scales
premaxillary frenum present
barbel present

Question 10

characteristics of rosyside dace

Answer 10

decurved lateral line

massive supra/terminal mouth

Question 11

characteristics of genus cyprinella

Answer 11

patches of pigmentation in last few dorsal rays
Diamond scales
laterally compressed deep bodies
relatively small eye

Question 12

characteristics of fathead minnow

Answer 12

crowded predorsal scales
crowded anteriolateral scales
small mouth
adult males with tubercles
short first dorsal ray
black spot on dorsal fin and base of caudal fin

Question 13

characteristics of common carp

Answer 13

first dorsal ray is a spine

has barbels

Question 14

characteristics of blue head chub

Answer 14

large terminal mouth
terminal barbel
no decreasing lateral line scales
no spot on dorsal fin

Question 15

distinguishing characteristic of white sucker

Answer 15

ascending lateral line scales

Question 16

distinguishing characteristic of northern hogsucker

Answer 16

head concave between eyes
mouth inferior, distended
lips entirely papillose

Question 17

distinguishing characteristic of creek chubsucker

Answer 17

40-46 midlateral scales

Question 18

characteristics of rosyface chub

Answer 18

punctulated lateral stripe

Question 19

distinguishing characteristics of all chub suckers

Answer 19

no lateral line

very oblique, subterminal mouth

Question 20

characteristics of grass carp

Answer 20

thick caudal peduncle
terminal mouth
preanal length 3x post anal length

Question 21

characteristics of golden shiner

Answer 21

decurved lateral line
superior mouth
falcate anal fin

Question 22

distinguishing characteristics of carpsuckers

Answer 22

deep robust body
very long dorsal fin base with > or equal to 22 rays
asymmetric subopercle

Question 23

characteristics of creek chub

Answer 23

black spot on dorsal fin
preterminal barbel
large terminal mouth
decreasing lateral line scale size

Question 24

distinguishing characteristics of spotted sucker

Answer 24

numerous rows of conspicuous spots
mouth subterminal, oblique
no lateral line

Question 25

characteristics of central stoneroller

Answer 25

horseshoe-shaped mouth

lower jaw has hard cartilaginous shelf

Question 26

characteristics of genus luxilus

Answer 26

no patches of dark pigmentation on dorsal membranes
“tall” scales
large eyes and mouth
laterally compressed/deep-bodied

Question 27

characteristics of genus hybopsis

Answer 27

very fusiform sreamlined body
scales more rounded, not diamond shaped
eye generally large
snout very rounded, subterminal mouth

Question 28

distinguishing characteristics of striped jumprock

Answer 28

body very elongate
15 or more caudal peduncle scales
less than 13 dorsal rays

Question 29

characteristics of goldfish

Answer 29

first dorsal ray is a spine

no barbels