There's no such thing as a chocolate fish.
No they cant it is impossible
all fresh water fish
because they use there tail to swim, and they don't have a tail on the front so they cant swim backwards.
a fish can swim in the water for ever but a human cant
no some swim upwards however they cant swim backwards but.. they do like to try. Whales have huge dongs.
The fish that live at the bottom of the sea are equiped with a swim bladder and by adjusting the pressure in this organ they can go up or down easily as they swim.
My meal
The word for swim for a fish is "swim." Fish swim by moving their bodies and fins to propel themselves through the water.
They swim in schools.Some have colors that help them blend in to their surroundings. Others change colors to match their surroundings. Some swim very fast to escape the danger. Some fish swim in very tight schools to confuse other fish. Some fish hide in the rocks and plants so the bigger fish cant get to them. Some fish can hide in poisonous anemonies and they are not affected by the poison but other fish are.
Yes fish can swim.
A catfish would be an example of a fish that can swim.
Fish can swim in any direction.