Simplify the following text for a Grade 5 native English-speaking person.
Original: Although the Japanese name for kamaboko is becoming increasingly common outside of Japan ( cf . , sushi ) , some extant English names for kamaboko are fish paste , fish loaf , fish cake , and fish sausage ( Tsuji , 1980 ) .
Simplified: Outside of Japan , kamaboko is often referred to as fish cake .