Caudal Fin Types
Heterocercal -- upper lobe is supported by posterior section of the vertebral column upper lobe > lower lobe e... Sharks
Caudal Fin Types
Abbreviated heterocercal - upper lobe is slightly longer than the lower lobe e.g.Bowfins
Homocercal -Vertebral column does not extend into the fin e.g., Most fishes
Homocercal Fin Types
Lunate tail:Very fast fish,able to maintain high speeds for long periods of time,but a lack of surface area means they can't stop or turn easily or swim backwards (e.g., tuna).
Truncate tail: Cruises at intermediate speeds, with increased manoeuvrability due to a larger surface area (e.g. mangrove jack). Also able to accelerate quickly when needed.
Forked tail: Cruising fish that swim continuously at very fast rate (e.g., tailor and Australian herring). Extra fin surface provides more manoeuvrability than fish with a Junate tail.
Rounded tail: Swims at intermediate speeds,with greater manoeuvrability,and able to accelerate quickly for short periods e.g.,estuary co