it depends... is it a salt water or fresh water type of fish. if it is a fresh water kind there is something wrong with it but if it is a salt water kind apparently some have been found to swim backwards for no apparent reason.
yes, doplins can swim backwards for about 1 hour
because they use there tail to swim, and they don't have a tail on the front so they cant swim backwards.
they dont swim backwards yah um, either u asked the question wrong or your reeeaallly tired cause they dont swim backwards
No, in fact very few-if any- sea animals can swim backwards
yes, crocodiles can swim backwards
Yes, shrimps do swim backwards because they don't have fins to move in the water so they pull in their abdomen towards their body quickly. doing this propels them through the water but they are moving backwards. tricky question!
No, they can not.
yes
they swim all ways..their is not forward backwards or sideways....
Their bodies are streamline to help them swim through water quickly against water resistance (a force) . What pushes them backwards is water resistance
They can swim backwards in short bursts, if that's what you mean.