Asked By: Ronald Coleman Date: created: Sep 07 2022

Do all fish have a dorsal fin

Answered By: Evan Butler Date: created: Sep 09 2022

Most fishes have one dorsal fin, but some fishes have two or three.

In spinous fins, the distal pterygiophore is often fused to the middle or not present at all.

Caudal/Tail fins: Also called the tail fins, caudal fins are attached to the end of the caudal peduncle and used for propulsion..

Asked By: Wallace Howard Date: created: Oct 10 2021

What does dorsal mean

Answered By: Cody Green Date: created: Oct 11 2021

Medical Definition of dorsal (Entry 1 of 2) 1a : being or located near, on, or toward the upper surface of an animal (as a quadruped) opposite the lower or ventral surface. b : being or located near, on, or toward the back or posterior part of the human body.

Asked By: Logan Henderson Date: created: Apr 21 2022

Why do dorsal fins bend in captivity

Answered By: Herbert Adams Date: created: Apr 24 2022

The phenomenon is more common in captivity, but people have also seen wild orcas with curved fins. So, the cause cannot be captivity alone. Ultimately, what’s going on is the collagen in the dorsal fin is breaking down. … In captivity, whales breach the surface more often, exposing their fins to the warmer air.

Asked By: Roger Ramirez Date: created: Jul 06 2022

Do fishes sleep

Answered By: Aidan Baker Date: created: Jul 08 2022

While fish do not sleep in the same way that land mammals sleep, most fish do rest. Research shows that fish may reduce their activity and metabolism while remaining alert to danger. Some fish float in place, some wedge themselves into a secure spot in the mud or coral, and some even locate a suitable nest.

Asked By: Jesse Martin Date: created: May 05 2022

Why dorsal fins are used in aircraft

Answered By: Howard Coleman Date: created: May 07 2022

The “extension” at the front is called “dorsal fin”. Its main purpose is to improve directional stability in high side-slip situations (asymmetric flight due to engine failure, crosswind landings, etc).

Asked By: Martin Brooks Date: created: Aug 14 2022

What does a dorsal fin mean

Answered By: Ashton Cook Date: created: Aug 15 2022

: a flat thin part on the back of some fish (such as sharks)

Asked By: Bruce Jenkins Date: created: Mar 13 2022

What is the function of fins in fish

Answered By: Wyatt Diaz Date: created: Mar 14 2022

Fins are appendages used by the fish to maintain its position, move, steer and stop. They are either single fins along the centerline of the fish, such as the dorsal (back) fins, caudal (tail) fin and anal fin, or paired fins, which include the pectoral (chest) and pelvic (hip) fins.

Asked By: Nicholas Richardson Date: created: Dec 08 2021

What fin means

Answered By: Andrew Bailey Date: created: Dec 09 2021

Fin is a French term meaning the end or finish. An example of fin is the end of a French movie. noun. 7.

Asked By: Reginald Reed Date: created: Oct 18 2022

What is fin effectiveness

Answered By: Hayden Lewis Date: created: Oct 18 2022

The fin temperature effectiveness or fin efficiency is defined as the ratio of the actual heat transfer rate through the fin base divided by the maximum possible heat transfer rate through the fin base, which can be obtained if the entire fin is at base temperature (i.e., its material thermal conductivity is infinite).

Asked By: Alex Rivera Date: created: Mar 23 2022

How do fins work

Answered By: David Young Date: created: Mar 25 2022

A fin is a thin component or appendage attached to a larger body or structure. Fins typically function as foils that produce lift or thrust, or provide the ability to steer or stabilize motion while traveling in water, air, or other fluids. … Fish fins are used to generate thrust and control the subsequent motion.

Asked By: David Bell Date: created: Aug 23 2022

What are the 5 types of tail fins

Answered By: Geoffrey Martinez Date: created: Aug 23 2022

The caudal fin is also known as tail fin or a median fin which is usually homocercal or heterocercal. Generally, it is a vertically expanded structure which is located at the caudal end of the body….Caudal FinProtocercal Caudal Fin. … Heterocercal Caudal Fin. … Homocercal Caudal Fin.

Asked By: Xavier Hayes Date: created: May 17 2022

What are the types of fins

Answered By: Carl Hernandez Date: created: May 20 2022

Here are the eight types of fish fins:Dorsal fins are found on the back of the fish. … Caudal fins are also known as tail fins. … Anal fins are on the ventral (bottom) surface of the fish, behind the anus. … Pectoral fins are located on each side of the fish, around where the head meets the body.More items…

Asked By: Gregory Walker Date: created: May 22 2022

What are the 2 types of fin fish

Answered By: Aaron Miller Date: created: May 23 2022

The anal/cloacal fin is located on the ventral surface behind the anus/cloaca. This fin is used to stabilize the fish while swimming. The adipose fin is a soft, fleshy fin found on the back behind the dorsal fin and just forward of the caudal fin.

Asked By: Alfred Roberts Date: created: Sep 22 2021

What is the purpose of a dorsal fin

Answered By: Roger Collins Date: created: Sep 24 2021

Dorsal fins. The dorsal fins increase the lateral surface of the body during swimming, and thereby provide stability but at the expense of increasing drag (see also BUOYANCY, LOCOMOTION, AND MOVEMENT IN FISHES | Maneuverability).

Asked By: Roger White Date: created: Sep 07 2021

What does a shark’s dorsal fin look like

Answered By: Neil Baker Date: created: Sep 08 2021

At a glance… The sharks of interest have distinct white dorsal fin markings (1 and 2) OR their dorsal fins are tall, slender from leading edge to trailing edge and light brown (3). Dorsal fins are the same color on both sides (see right and left side views below).

Asked By: Alan Scott Date: created: Jul 09 2022

What is a Sharks top fin called

Answered By: Gordon Jenkins Date: created: Jul 10 2022

The caudal fin, or tail fin, is the fin located at the top of the tail. The caudal fin is used for propel the shark forward, increasing or decreasing speed, and thrust. The caudal fin is broken down into two parts, the top half known as the dorsal portion and the bottom half know as the ventral portion.

Asked By: Cameron Thomas Date: created: Nov 20 2022

Which fin is the dorsal fin

Answered By: Steven Watson Date: created: Nov 20 2022

Fins: Help a fish move. The top fins are called dorsal fins. If there are two dorsal fins, the one nearest the head is called the first dorsal fin and the one behind it is the second dorsal fin. The belly or lower part of the fish is the ventral region.

Asked By: Wallace Hughes Date: created: Oct 13 2021

What is a dorsal fin made of

Answered By: Lewis Hill Date: created: Oct 15 2021

The dorsal fin and flukes are composed of connective tissue, not bone. Other connective tissue, such as external ears, has been lost, and the male genitalia have moved internally.

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