Attendant phobias may merge to create this condition of aviophobia. For example, acrophobia (a fear of heights) may merge with claustrophobia (a fear of being in a small enclosed area) to form an extreme fear of being trapped in the confines of the seating area of a plane and not being able to leave the space because the plane is in flight.
Most aquarium fish can regrow their tails to some degree. However, this ability is not magic. You need to identify the cause of the fin damage and correct it to prevent recurrence.You will also need to provide optimal conditions to encourage regrowth.sually, a fish will regrow fins without incident. But sometimes, fin rot and other disease may impair its ability to do so. If you see signs of infection and salt doesn't help, consider purchasing antibiotics from the pet shop.
The perch is an example of a ray-finned fish. Its fins have spiny rays of cartilage &/or bone to support them. Fins help the perch to move quickly through the water and steer without rolling. The perch also has a streamline body shape that makes it well adapted for movement in the water.