Forked tails are for burst swimmers and the best for acceleration (Barracuda) Lunate (homocercal) tails are for for long distance swimming because they have low drag ang good acceleration (Swordfish) Truncate tails have good manouvability give short bursts of energy (Butterflyfish) Rounded tails also offer good manourability, however they have high drag (Cowfish) Eel-like tails offer very little acceleration, however they are very good for balance and manouvering (eels) Heterocercal tails are ideal for long distance swimming. The larger upper lobe adds vertical lift, making it easier to maintain position whiel swimming (sharks)
The combination of fins (pectoral, dorsal, anal, pelvic, and caudal) allow fish to control their movevents and position in the water. This means controlling pitch, roll, and yaw.
Mouth Shape and Location 45