a dog fish
hold iy in the upper head and near the tail
Seahorse
The tail fin of a fish (the caudal fin) is a fish's means of propulsion through the water.
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.
They can hold on to sea weed during a whirl pool.
Well, I Think The Tail.
To help it swim and change direction in the water.
Raninbow Shark
expel
fin and tail
The one inch of fish per gallon of water is an old guideline. With newer filters, and other equipment, plus more frequent water changes your tank can support more fish.
Fish typically have one tail, known as the caudal fin, which helps them swim and maneuver in water. The shape and size of the tail can vary significantly among different species, contributing to their swimming capabilities. Some fish may have additional fin structures, but the caudal fin is their primary tail.