By its fins
dorsal fin
Cory Monteith
dorsal fin
There are many classes of fish which do not have scales nor fins. The Agnatha has neither fins nor scales; the Condrichthye, including sharkes, rays and skeats have fins but no scales; the Ostichthyes, of which several families have members with the common name, mackerel, with both scales and fins. The King Mackerel, S. cavalla, has very tiny scales and fins.
Fins for swimming are a great tool to get young people in the water and off the couch. Something as simple fins to get children interested in under water adventures. Water sports are a great bonding opportunity for a family. http://drifterdivegear.com/
The "ventrals" is simply another name for the fishes "ventral fins" These are the paired fins in front of the Vent (aka Anus).
no nothing moves it it uses it fins top move
There are a wide range of different fins available for scuba diving. Other than dive fins, these include fins such as snorkel fins, paddle fins and split fins.
The Rouquals.
Guts, fins, tail and eyes.
dorsal fins