Forked
Image Source: roughfish.com
Northern Pike Minnow
Lunate
Image Source: JustFunFacts
Sailfish
  • Good compromise between Truncate and Lunate, but with a bias towards speed over agility
  • Continuous swimmers
  • Low drag
  • Bursts of speed
  • Caudal fin of choice for speed demons
  • Lowest drag
  • Open ocean continuous swimmers
  • Long distance
  • Poor low-speed performance
Sources: 

​​https://manoa.hawaii.edu/exploringourfluidearth/biological/fish/structure-and-function-fish

​https://books.google.com/books?id=TW2SAkgJOdMC&pg=PA168&lpg=PA168&dq=truncate++caudal+fin&source=bl&ots=fc5ntwYEEo&sig=ACfU3U2fUa_xjurEXZUTn9WLlB3W3oR0gw&hl=en&sa=X&ved=2ahUKEwjfsO_oqt3hAhXbJTQIHYUlAN04ChDoATAHegQICRAB#v=onepage&q=truncate%20%20caudal%20fin&f=false