To swim..? If you mean the fin on top of their bodies then it helps stabilize them.
They have tail fins to propel themselves in water. It can also aid in steering the fish in one direction.
no it is clinicly proven
the tail's for power and i think the fins are for like steering
Probably, dorsal, ventral and tail fins.
Tail , fins and body.
Scales, gills, fins, tail, streamlined, cold blooded
They both help a fish to move
fins and tail fin
AnswerBy swimming. The fish uses it's tail muscles to pull its tail back and forth propelling the water out of the way. Did you know that the faster-swimming fish generally have a smaller gap in their tail while slow fish have a bigger gap?Fish move by oscillating their fins and tails. It is a very efficient form of transport in the water.
no usually just the tail , the other fins are for steering
mouth or gills
Well there are lots of types of fins for betta fish. my betta fish has a long stringy tail and fins, but my female has short average fins. most have plain fins. mine is the only one i have seen in my area with a stringy tail. most fish have stringy tails if they are sick but not mine he was bred to be like that. depending on the fish and the area well there are lots of things that are considered normal for bettas.
Guts, fins, tail and eyes.
by looking done where the tail or fins are