Question 1
a
Mouth at front of head. Mouth on underside of head.
b
Rounded caudal fin. Forked caudal fin.
c
One set of dorsal fins. Two sets of dorsal fins
d
Eyes on side of head. Eyes on top of head.
Which of the following pairs of characteristics are contrasting features between two different types of fish?
a. Mouth at front of head vs. mouth on underside of head
b. Rounded caudal fin vs. forked caudal fin