I can think of only two things. Both are four letters long and both can be slippery.
Fish are not alike to mammals
Fish and bees are alike in the sense that they are all obtained by fishing.
It depends on what kind of fish it is but most fish are alike to crabs because they both have the special technique to swim
they are both animals
jawless fishes and salamanders are alike in that both types animals
put salt and vinegar into the pond, this will remove the soap plus salt and vinegar go really well with fish
Fish :D
soap and water
no because crabs come out of water and live and fish when the are out of water they die
Both contain the element sodium. Ohter than that there is not much similarities. soap is generally sodium hydroxide.
fish soap on a rope
yes, in fact many of the names of bones are the same